diff --git a/src/ims/application/_main.py b/src/ims/application/_main.py
index 521e6da1f..4725ac866 100644
--- a/src/ims/application/_main.py
+++ b/src/ims/application/_main.py
@@ -29,7 +29,8 @@
 import ims.element
 from ims.config import Configuration, URLs
 from ims.dms import DutyManagementSystem
-from ims.ext.klein import KleinRenderable
+from ims.ext.json import jsonTextFromObject
+from ims.ext.klein import ContentType, HeaderName, KleinRenderable, static
 
 from ._api import APIApplication
 from ._auth import AuthApplication
@@ -118,7 +119,8 @@ def __del__(self) -> None:
     #
 
     @router.route(URLs.root, methods=("HEAD", "GET"))
-    def rootResource(self, request: IRequest) -> KleinRenderable:
+    @static
+    def rootEndpoint(self, request: IRequest) -> KleinRenderable:
         """
         Server root page.
 
@@ -128,15 +130,42 @@ def rootResource(self, request: IRequest) -> KleinRenderable:
 
 
     @router.route(URLs.static, branch=True)
-    def static(self, request: IRequest) -> KleinRenderable:
+    @static
+    def staticEndpoint(self, request: IRequest) -> KleinRenderable:
         return File(resourcesDirectory.path)
 
 
+    #
+    # URLs
+    #
+
+    @router.route(URLs.urlsJS, methods=("HEAD", "GET"))
+    @static
+    def urlsEndpoint(self, request: IRequest) -> KleinRenderable:
+        """
+        JavaScript variables for service URLs.
+        """
+        urls = {
+            k: getattr(URLs, k).asText() for k in URLs.__dict__
+            if not k.startswith("_")
+        }
+
+        request.setHeader(
+            HeaderName.contentType.value, ContentType.javascript.value
+        )
+
+        return "\n".join((
+            "var url_{} = {};".format(k, jsonTextFromObject(v))
+            for k, v in urls.items()
+        ))
+
+
     #
     # Child application endpoints
     #
 
     @router.route(URLs.api, branch=True)
+    @static
     def apiApplicationEndpoint(self, request: IRequest) -> KleinRenderable:
         """
         API application resource.
@@ -145,6 +174,7 @@ def apiApplicationEndpoint(self, request: IRequest) -> KleinRenderable:
 
 
     @router.route(URLs.auth, branch=True)
+    @static
     def authApplicationEndpoint(self, request: IRequest) -> KleinRenderable:
         """
         Auth application resource.
@@ -153,6 +183,7 @@ def authApplicationEndpoint(self, request: IRequest) -> KleinRenderable:
 
 
     @router.route(URLs.external, branch=True)
+    @static
     def externalApplicationEndpoint(
         self, request: IRequest
     ) -> KleinRenderable:
@@ -163,6 +194,7 @@ def externalApplicationEndpoint(
 
 
     @router.route(URLs.app, branch=True)
+    @static
     def webApplicationEndpoint(self, request: IRequest) -> KleinRenderable:
         """
         Web application resource.
diff --git a/src/ims/config/_urls.py b/src/ims/config/_urls.py
index 30470a20d..7b78c3d8e 100644
--- a/src/ims/config/_urls.py
+++ b/src/ims/config/_urls.py
@@ -38,6 +38,7 @@ class URLs(object):
     root = URL.fromText("/")
 
     prefix = root.child("ims").child("")
+    urlsJS = prefix.child("urls.js")
 
     # Static resources
     static     = prefix.child("static")
diff --git a/src/ims/element/_page.py b/src/ims/element/_page.py
index 7a9cf61a1..ea746093c 100644
--- a/src/ims/element/_page.py
+++ b/src/ims/element/_page.py
@@ -18,6 +18,11 @@
 Element base classes.
 """
 
+from collections import OrderedDict
+from typing import Iterable, MutableMapping
+
+from hyperlink import URL
+
 from twisted.web.iweb import IRequest
 from twisted.web.template import Tag, renderer, tags
 
@@ -44,6 +49,46 @@ def __init__(self, config: Configuration, title: str) -> None:
         self.titleText = title
 
 
+    def urlsFromImportSpec(self, spec: str) -> Iterable[URL]:
+        """
+        Given a string specifying desired imports, return the corresponding
+        URLs.
+        """
+        urls = self.config.urls
+
+        result: MutableMapping[str, URL] = OrderedDict()
+
+        def add(name: str) -> None:
+            if not name or name in result:
+                return
+
+            if name == "bootstrap":
+                add("jquery")
+
+            if name == "ims":
+                add("jquery")
+                add("moment")
+
+            try:
+                result[name] = getattr(urls, "{}JS".format(name))
+            except AttributeError:
+                raise ValueError(
+                    "Invalid import {!r} in spec {!r}".format(name, spec)
+                )
+
+            if name == "dataTables":
+                add("dataTablesBootstrap")
+
+        # All pages use Bootstrap
+        add("bootstrap")
+        add("urls")
+
+        for name in spec.split(","):
+            add(name.strip())
+
+        return result.values()
+
+
     @renderer
     def title(
         self, request: IRequest, tag: Tag = tags.title
@@ -62,14 +107,24 @@ def title(
     @renderer
     def head(self, request: IRequest, tag: Tag = tags.head) -> KleinRenderable:
         """
-        <head> element.
+        `<head>` element.
         """
         urls = self.config.urls
 
         children = tag.children
         tag.children = []
 
+        imports = (
+            tags.script(src=url.asText())
+            for url in
+            self.urlsFromImportSpec(tag.attributes.get("imports", ""))
+        )
+
+        if "imports" in tag.attributes:
+            del tag.attributes["imports"]
+
         return tag(
+            # Resource metadata
             tags.meta(charset="utf-8"),
             tags.meta(
                 name="viewport", content="width=device-width, initial-scale=1"
@@ -86,9 +141,10 @@ def head(self, request: IRequest, tag: Tag = tags.head) -> KleinRenderable:
                 type="text/css", rel="stylesheet", media="screen",
                 href=urls.styleSheet.asText(),
             ),
-            tags.script(src=urls.jqueryJS.asText()),
-            tags.script(src=urls.bootstrapJS.asText()),
             self.title(request),
+            # JavaScript resource imports
+            imports,
+            # Child elements
             children,
         )
 
@@ -127,7 +183,7 @@ def bottom(
     @renderer
     def nav(self, request: IRequest, tag: Tag = tags.nav) -> KleinRenderable:
         """
-        <nav> element.
+        `<nav>` element.
         """
         return NavElement(config=self.config)
 
@@ -137,7 +193,7 @@ def header(
         self, request: IRequest, tag: Tag = tags.header
     ) -> KleinRenderable:
         """
-        <header> element.
+        `<header>` element.
         """
         return HeaderElement(config=self.config)
 
@@ -147,6 +203,6 @@ def footer(
         self, request: IRequest, tag: Tag = tags.footer
     ) -> KleinRenderable:
         """
-        <footer> element.
+        `<footer>` element.
         """
         return FooterElement(config=self.config)
diff --git a/src/ims/element/admin/template.xhtml b/src/ims/element/admin/template.xhtml
index 399b0df71..880932a38 100644
--- a/src/ims/element/admin/template.xhtml
+++ b/src/ims/element/admin/template.xhtml
@@ -1,11 +1,7 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
 
-  <head t:render="head">
-    <script t:render="url" url="momentJS" />
-    <script t:render="url" url="imsJS" />
-    <script t:render="url" url="adminJS" />
-  </head>
+  <head t:render="head" imports="ims,admin" />
 
   <body>
     <div t:render="container">
diff --git a/src/ims/element/admin_acl/template.xhtml b/src/ims/element/admin_acl/template.xhtml
index dac38cbf8..2fca631d7 100644
--- a/src/ims/element/admin_acl/template.xhtml
+++ b/src/ims/element/admin_acl/template.xhtml
@@ -1,11 +1,7 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
 
-  <head t:render="head">
-    <script t:render="url" url="momentJS" />
-    <script t:render="url" url="imsJS" />
-    <script t:render="url" url="adminAccessControlJS" />
-  </head>
+  <head t:render="head" imports="ims,adminAccessControl" />
 
   <body>
     <div t:render="container">
@@ -39,8 +35,7 @@
   </body>
 
   <script>
-    var events    = <json t:render="events_list" />;
-    var accessURL = <json t:render="url" url="acl" />;
+    var events = <json t:render="events_list" />;
 
     initPage();
   </script>
diff --git a/src/ims/element/admin_streets/template.xhtml b/src/ims/element/admin_streets/template.xhtml
index 41fcb880b..00c9bf85d 100644
--- a/src/ims/element/admin_streets/template.xhtml
+++ b/src/ims/element/admin_streets/template.xhtml
@@ -1,11 +1,7 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
 
-  <head t:render="head">
-    <script t:render="url" url="momentJS" />
-    <script t:render="url" url="imsJS" />
-    <script t:render="url" url="adminStreetsJS" />
-  </head>
+  <head t:render="head" imports="ims,adminStreets" />
 
   <body>
     <div t:render="container">
@@ -41,8 +37,7 @@
   </body>
 
   <script>
-    var events     = <json t:render="events_list" />;
-    var streetsURL = <json t:render="url" url="streets" />;
+    var events = <json t:render="events_list" />;
 
     initPage();
   </script>
diff --git a/src/ims/element/admin_types/template.xhtml b/src/ims/element/admin_types/template.xhtml
index 28083492c..d9e5706a5 100644
--- a/src/ims/element/admin_types/template.xhtml
+++ b/src/ims/element/admin_types/template.xhtml
@@ -1,11 +1,7 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
 
-  <head t:render="head">
-    <script t:render="url" url="momentJS" />
-    <script t:render="url" url="imsJS" />
-    <script t:render="url" url="adminIncidentTypesJS" />
-  </head>
+  <head t:render="head" imports="ims,adminIncidentTypes" />
 
   <body>
     <div t:render="container">
@@ -41,8 +37,7 @@
   </body>
 
   <script>
-    var events           = <json t:render="events_list" />;
-    var incidentTypesURL = <json t:render="url" url="incidentTypes" />;
+    var events = <json t:render="events_list" />;
 
     initPage();
   </script>
diff --git a/src/ims/element/incident/_incident.py b/src/ims/element/incident/_incident.py
index 54f303abb..18f43136c 100644
--- a/src/ims/element/incident/_incident.py
+++ b/src/ims/element/incident/_incident.py
@@ -77,30 +77,6 @@ def incident_number(self, request: IRequest, tag: Tag) -> KleinRenderable:
         return jsonTextFromObject(self.number)
 
 
-    @renderer
-    def incidents_url(self, request: IRequest, tag: Tag) -> KleinRenderable:
-        """
-        JSON string: URL for incidents endpoint for the event.
-        """
-        return jsonTextFromObject(
-            self.config.urls.incidents.asText()
-            .replace("<eventID>", self.event.id)
-        )
-
-
-    @renderer
-    def view_incidents_url(
-        self, request: IRequest, tag: Tag
-    ) -> KleinRenderable:
-        """
-        JSON string: URL for incidents page for the event.
-        """
-        return jsonTextFromObject(
-            self.config.urls.viewIncidents.asText()
-            .replace("<eventID>", self.event.id)
-        )
-
-
     @renderer
     async def concentric_street_name_by_id(
         self, request: IRequest, tag: Tag
diff --git a/src/ims/element/incident/template.xhtml b/src/ims/element/incident/template.xhtml
index 41816ada9..ae514a659 100644
--- a/src/ims/element/incident/template.xhtml
+++ b/src/ims/element/incident/template.xhtml
@@ -1,28 +1,20 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
 
-  <head t:render="head">
-    <script t:render="url" url="momentJS"       />
-    <script t:render="url" url="lscacheJS"      />
-    <script t:render="url" url="imsJS"          />
-    <script t:render="url" url="viewIncidentJS" />
-  </head>
+  <head t:render="head" imports="lscache,ims,viewIncident"
+  />
 
   <body />
 
   <script>
     <!-- FIXME: figure out how to move this to / include from incident.js -->
-    var editingAllowed         = <json t:render="editing_allowed"                />;
-    var eventID                = <json t:render="event_id"                       />;
-    var incidentNumber         = <json t:render="incident_number"                />;
-    var incidentsURL           = <json t:render="incidents_url"                  />;
-    var viewIncidentsURL       = <json t:render="view_incidents_url"             />;
-    var pageTemplateURL        = <json t:render="url" url="viewIncidentTemplate" />;
-    var personnelURL           = <json t:render="url" url="personnel"            />;
-    var incidentTypesURL       = <json t:render="url" url="incidentTypes"        />;
-    var incidentReportsURL     = <json t:render="url" url="incidentReports"      />;
-    var viewIncidentReportsURL = <json t:render="url" url="viewIncidentReports"  />;
-    var eventSourceURL         = <json t:render="url" url="eventSource"          />;
+    var editingAllowed = <json t:render="editing_allowed" />;
+    var eventID        = <json t:render="event_id"        />;
+    var incidentNumber = <json t:render="incident_number" />;
+
+    var pageTemplateURL  = url_viewIncidentTemplate;
+    var incidentsURL     = urlReplace(url_incidents, eventID);
+    var viewIncidentsURL = urlReplace(url_viewIncidents, eventID);
 
     var concentricStreetNameByID = <json t:render="concentric_street_name_by_id" />;
 
diff --git a/src/ims/element/queue/_queue.py b/src/ims/element/queue/_queue.py
index c39112782..33b238306 100644
--- a/src/ims/element/queue/_queue.py
+++ b/src/ims/element/queue/_queue.py
@@ -64,30 +64,6 @@ def event_id(self, request: IRequest, tag: Tag) -> KleinRenderable:
         return jsonTextFromObject(self.event.id)
 
 
-    @renderer
-    def data_url(self, request: IRequest, tag: Tag) -> KleinRenderable:
-        """
-        JSON string: URL for incidents endpoint for the event.
-        """
-        return jsonTextFromObject(
-            self.config.urls.incidents.asText()
-            .replace("<eventID>", self.event.id)
-        )
-
-
-    @renderer
-    def view_incidents_url(
-        self, request: IRequest, tag: Tag
-    ) -> KleinRenderable:
-        """
-        JSON string: URL for incidents page for the event.
-        """
-        return jsonTextFromObject(
-            self.config.urls.viewIncidents.asText()
-            .replace("<eventID>", self.event.id)
-        )
-
-
     @renderer
     async def concentric_street_name_by_id(
         self, request: IRequest, tag: Tag
diff --git a/src/ims/element/queue/template.xhtml b/src/ims/element/queue/template.xhtml
index 70d4c6412..b80fa5e09 100644
--- a/src/ims/element/queue/template.xhtml
+++ b/src/ims/element/queue/template.xhtml
@@ -1,24 +1,19 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
-  <head t:render="head">
+  <head t:render="head" imports="dataTables,ims,viewDispatchQueue">
     <link type="text/css" rel="stylesheet" media="screen" t:render="url" url="dataTablesBootstrapCSS" />
-    <script t:render="url" url="dataTablesJS"          />
-    <script t:render="url" url="dataTablesBootstrapJS" />
-    <script t:render="url" url="momentJS"              />
-    <script t:render="url" url="imsJS"                 />
-    <script t:render="url" url="viewDispatchQueueJS"   />
   </head>
 
   <body />
 
   <script>
     <!-- FIXME: figure out how to move this to / include from incident.js -->
-    var editingAllowed   = <json t:render="editing_allowed"                     />;
-    var eventID          = <json t:render="event_id"                            />;
-    var pageTemplateURL  = <json t:render="url" url="viewDispatchQueueTemplate" />;
-    var dataURL          = <json t:render="data_url"                            />;
-    var viewIncidentsURL = <json t:render="view_incidents_url"                  />;
-    var eventSourceURL   = <json t:render="url" url="eventSource"               />;
+    var editingAllowed = <json t:render="editing_allowed" />;
+    var eventID        = <json t:render="event_id"        />;
+
+    var pageTemplateURL  = url_viewDispatchQueueTemplate;
+    var dataURL          = urlReplace(url_incidents, eventID);
+    var viewIncidentsURL = urlReplace(url_viewIncidents, eventID);
 
     var concentricStreetNameByID = <json t:render="concentric_street_name_by_id" />;
 
diff --git a/src/ims/element/report/template.xhtml b/src/ims/element/report/template.xhtml
index 7fcb9261a..b8b475c1b 100644
--- a/src/ims/element/report/template.xhtml
+++ b/src/ims/element/report/template.xhtml
@@ -1,22 +1,15 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
 
-  <head t:render="head">
-    <script t:render="url" url="momentJS"             />
-    <script t:render="url" url="imsJS"                />
-    <script t:render="url" url="viewIncidentReportJS" />
-  </head>
+  <head t:render="head" imports="ims,viewIncidentReport" />
 
   <body />
 
   <script>
     <!-- FIXME: figure out how to move this to / include from report.js -->
-    var editingAllowed         = <json t:render="editing_allowed"                      />;
-    var incidentReportNumber   = <json t:render="incident_report_number"               />;
-    var pageTemplateURL        = <json t:render="url" url="viewIncidentReportTemplate" />;
-    var incidentReportsURL     = <json t:render="url" url="incidentReports"            />;
-    var viewIncidentReportsURL = <json t:render="url" url="viewIncidentReports"        />;
-    var personnelURL           = <json t:render="url" url="personnel"                  />;
+    var editingAllowed       = <json t:render="editing_allowed"                      />;
+    var incidentReportNumber = <json t:render="incident_report_number"               />;
+    var pageTemplateURL      = url_viewIncidentReportTemplate;
 
     initIncidentReportPage();
   </script>
diff --git a/src/ims/element/reports/template.xhtml b/src/ims/element/reports/template.xhtml
index c0fbfaaea..79b529803 100644
--- a/src/ims/element/reports/template.xhtml
+++ b/src/ims/element/reports/template.xhtml
@@ -1,22 +1,14 @@
 <!DOCTYPE html>
 <html xmlns:t="http://twistedmatrix.com/ns/twisted.web.template/0.1" t:render="root">
-  <head t:render="head">
+  <head t:render="head" imports="dataTables,ims,viewIncidentReports">
     <link type="text/css" rel="stylesheet" media="screen" t:render="url" url="dataTablesBootstrapCSS" />
-    <script t:render="url" url="dataTablesJS"          />
-    <script t:render="url" url="dataTablesBootstrapJS" />
-    <script t:render="url" url="momentJS"              />
-    <script t:render="url" url="imsJS"                 />
-    <script t:render="url" url="viewIncidentReportsJS" />
   </head>
 
   <body />
 
   <script>
-    var editingAllowed         = <json t:render="editing_allowed"                       />;
-    var pageTemplateURL        = <json t:render="url" url="viewIncidentReportsTemplate" />;
-    var dataURL                = <json t:render="url" url="incidentReports"             /> + "?event=;incident=";
-    var viewIncidentReportsURL = <json t:render="url" url="viewIncidentReports"         />;
-    var eventSourceURL         = <json t:render="url" url="eventSource"                 />;
+    var editingAllowed  = <json t:render="editing_allowed" />;
+    var pageTemplateURL = url_viewIncidentReportsTemplate;
 
     initIncidentReportsPage();
   </script>
diff --git a/src/ims/element/static/admin_access.js b/src/ims/element/static/admin_access.js
index f2990d2ba..a95f5b13d 100644
--- a/src/ims/element/static/admin_access.js
+++ b/src/ims/element/static/admin_access.js
@@ -45,7 +45,7 @@ function loadAccessControlList(success) {
         window.alert(message);
     }
 
-    jsonRequest(accessURL, null, ok, fail);
+    jsonRequest(url_acl, null, ok, fail);
 }
 
 
@@ -195,5 +195,5 @@ function sendACL(edits, success, error) {
         window.alert(message);
     }
 
-    jsonRequest(accessURL, edits, ok, fail);
+    jsonRequest(url_acl, edits, ok, fail);
 }
diff --git a/src/ims/element/static/admin_streets.js b/src/ims/element/static/admin_streets.js
index 71d0f8196..e761a1e3b 100644
--- a/src/ims/element/static/admin_streets.js
+++ b/src/ims/element/static/admin_streets.js
@@ -31,7 +31,7 @@ function initPage() {
 var streets = null;
 
 function loadStreets(success) {
-    var url = streetsURL;
+    var url = url_streets;
 
     function ok(data, status, xhr) {
         streets = data;
@@ -47,7 +47,7 @@ function loadStreets(success) {
         window.alert(message);
     }
 
-    jsonRequest(streetsURL, null, ok, fail);
+    jsonRequest(url_streets, null, ok, fail);
 }
 
 
@@ -134,5 +134,5 @@ function sendStreets(edits, success, error) {
         window.alert(message);
     }
 
-    jsonRequest(streetsURL, edits, ok, fail);
+    jsonRequest(url_streets, edits, ok, fail);
 }
diff --git a/src/ims/element/static/admin_types.js b/src/ims/element/static/admin_types.js
index a34b1da95..bd9d55b0a 100644
--- a/src/ims/element/static/admin_types.js
+++ b/src/ims/element/static/admin_types.js
@@ -37,8 +37,6 @@ var incidentTypes = null;
 var incidentTypesVisible = null;
 
 function loadIncidentTypes(success) {
-    var url = incidentTypesURL;
-
     var gotAll = false;
     var gotVisible = false;
 
@@ -69,8 +67,8 @@ function loadIncidentTypes(success) {
         window.alert(message);
     }
 
-    jsonRequest(incidentTypesURL, null, okVisible, fail);
-    jsonRequest(incidentTypesURL + "?hidden=true", null, okAll, fail);
+    jsonRequest(url_incidentTypes, null, okVisible, fail);
+    jsonRequest(url_incidentTypes + "?hidden=true", null, okAll, fail);
 }
 
 
@@ -164,5 +162,5 @@ function sendIncidentTypes(edits, success, error) {
         window.alert(message);
     }
 
-    jsonRequest(incidentTypesURL, edits, ok, fail);
+    jsonRequest(url_incidentTypes, edits, ok, fail);
 }
diff --git a/src/ims/element/static/ims.js b/src/ims/element/static/ims.js
index d3f4e3ecd..1880b59ca 100644
--- a/src/ims/element/static/ims.js
+++ b/src/ims/element/static/ims.js
@@ -38,6 +38,17 @@ function htmlAsText(html) {
 }
 
 
+//
+// URL substitution
+//
+function urlReplace(url, eventID) {
+    if (eventID) {
+        url = url.replace("<eventID>", eventID);
+    }
+    return url;
+}
+
+
 //
 // Errors
 ///
@@ -610,7 +621,7 @@ function reportEntryElement(entry) {
 
         var link = $("<a />");
         link.text("incident report #" + entry.merged);
-        link.attr("href", viewIncidentReportsURL + entry.merged)
+        link.attr("href", url_viewIncidentReports + entry.merged)
 
         var reportNumberContainer = $("<span />");
         metaDataContainer.append("(via ");
@@ -748,7 +759,7 @@ var eventSource = null;
 
 function subscribeToUpdates() {
     eventSource = new EventSource(
-        eventSourceURL, { withCredentials: true }
+        url_eventSource, { withCredentials: true }
     );
 
     eventSource.addEventListener("open", function(e) {
diff --git a/src/ims/element/static/incident.js b/src/ims/element/static/incident.js
index 83cdf8a28..0fb4d6c26 100644
--- a/src/ims/element/static/incident.js
+++ b/src/ims/element/static/incident.js
@@ -227,7 +227,7 @@ function loadPersonnel(success) {
         window.alert(message);
     }
 
-    jsonRequest(personnelURL, null, ok, fail);
+    jsonRequest(url_personnel, null, ok, fail);
 }
 
 
@@ -289,7 +289,7 @@ function loadIncidentTypes(success) {
         window.alert(message);
     }
 
-    jsonRequest(incidentTypesURL, null, ok, fail);
+    jsonRequest(url_incidentTypes, null, ok, fail);
 }
 
 
@@ -339,7 +339,7 @@ function loadUnattachedIncidentReports(success) {
         }
     }
 
-    jsonRequest(incidentReportsURL + "?event=;incident=", null, ok, fail);
+    jsonRequest(url_incidentReports + "?event=;incident=", null, ok, fail);
 }
 
 
@@ -369,7 +369,7 @@ function loadAttachedIncidentReports(success) {
     }
 
     jsonRequest(
-        incidentReportsURL + "?event=" + eventID + ";incident=" + incidentNumber,
+        url_incidentReports + "?event=" + eventID + ";incident=" + incidentNumber,
         null, ok, fail
     );
 }
@@ -761,7 +761,7 @@ function drawAttachedIncidentReports() {
         var report = reports[i];
         var item = _reportsItem.clone();
         var link = $("<a />");
-        link.attr("href", viewIncidentReportsURL + report.number);
+        link.attr("href", url_viewIncidentReports + report.number);
         link.text(summarizeIncidentReport(report));
         item.append(link);
         item.data(report);
@@ -1084,7 +1084,7 @@ function detachIncidentReport(sender) {
     }
 
     var url = (
-        incidentReportsURL + incidentReport.number +
+        url_incidentReports + incidentReport.number +
         "?action=detach;event=" + eventID + ";incident=" + incidentNumber
     );
 
@@ -1114,7 +1114,7 @@ function attachIncidentReport() {
     }
 
     var url = (
-        incidentReportsURL + incidentReportNumber +
+        url_incidentReports + incidentReportNumber +
         "?action=attach;event=" + eventID + ";incident=" + incidentNumber
     );
 
diff --git a/src/ims/element/static/incident_report.js b/src/ims/element/static/incident_report.js
index 1c31e4cc8..7e1f4e7fb 100644
--- a/src/ims/element/static/incident_report.js
+++ b/src/ims/element/static/incident_report.js
@@ -102,7 +102,7 @@ function loadIncidentReport(success) {
             "created": null,
         });
     } else {
-        var url = incidentReportsURL + number;
+        var url = url_incidentReports + number;
         jsonRequest(url, null, ok, fail);
     }
 }
@@ -192,7 +192,7 @@ function drawSummary() {
 
 function sendEdits(edits, success, error) {
     var number = incidentReport.number
-    var url = incidentReportsURL;
+    var url = url_incidentReports;
 
     if (number == null) {
         // We're creating a new incident report.
@@ -239,7 +239,7 @@ function sendEdits(edits, success, error) {
             // Update browser history to update URL
             drawTitle();
             window.history.pushState(
-                null, document.title, viewIncidentReportsURL + newNumber
+                null, document.title, url_viewIncidentReports + newNumber
             );
         }
 
diff --git a/src/ims/element/static/incident_reports.js b/src/ims/element/static/incident_reports.js
index 89a9f0568..438f3a5bd 100644
--- a/src/ims/element/static/incident_reports.js
+++ b/src/ims/element/static/incident_reports.js
@@ -105,7 +105,7 @@ function initDataTables() {
         "processing": true,
         "scrollX": false, "scrollY": false,
         "ajax": {
-            "url": dataURL,
+            "url": url_incidentReports + "?event=;incident=",
             "dataSrc": dataHandler,
         },
         "columns": [
@@ -136,7 +136,7 @@ function initDataTables() {
         ],
         "createdRow": function (row, incidentReport, index) {
             $(row).click(function () {
-                var url = viewIncidentReportsURL + incidentReport.number;
+                var url = url_viewIncidentReports + incidentReport.number;
 
                 // Open new context with link
                 window.open(url, "Incident_Report:" + incidentReport.number);
diff --git a/src/ims/ext/klein.py b/src/ims/ext/klein.py
index 170399111..0b0011165 100644
--- a/src/ims/ext/klein.py
+++ b/src/ims/ext/klein.py
@@ -91,7 +91,7 @@ class HeaderName(Enum):
 
 
 
-if True:
+if False:
     _staticETag = version
     _maxAge = 60 * 5  # 5 minutes
 else:
diff --git a/src/ims/store/sqlite/test/test_store_incident.py b/src/ims/store/sqlite/test/test_store_incident.py
index 2987d0a27..bc7894c4e 100644
--- a/src/ims/store/sqlite/test/test_store_incident.py
+++ b/src/ims/store/sqlite/test/test_store_incident.py
@@ -20,9 +20,7 @@
 
 from collections import defaultdict
 from datetime import datetime as DateTime, timezone as TimeZone
-from typing import (
-    Any, Dict, Iterable, List, Optional, Set, Tuple, cast
-)
+from typing import Any, Dict, Iterable, List, Optional, Set, Tuple
 
 from attr import fields as attrFields
 
@@ -570,7 +568,7 @@ def test_setIncident_incidentTypes_error(self) -> None:
 
     @given(
         incidents(new=True),
-        cast(Any, rangerHandles()).flatmap(
+        rangerHandles().flatmap(
             lambda author:
                 tuples(
                     lists(
diff --git a/src/ims/store/sqlite/test/test_store_type.py b/src/ims/store/sqlite/test/test_store_type.py
index 8cc27c8c2..de4d10caa 100644
--- a/src/ims/store/sqlite/test/test_store_type.py
+++ b/src/ims/store/sqlite/test/test_store_type.py
@@ -18,7 +18,7 @@
 Tests for :mod:`ranger-ims-server.store.sqlite._store`
 """
 
-from typing import Any, Dict, Set, Tuple, cast
+from typing import Dict, Set, Tuple
 
 from hypothesis import given
 from hypothesis.strategies import booleans, tuples
@@ -105,7 +105,7 @@ def test_incidentTypes_includeHidden(
 
 
     @given(
-        cast(Any, incidentTypesText()).filter(lambda t: t not in builtInTypes),
+        incidentTypesText().filter(lambda t: t not in builtInTypes),
         booleans(),
     )
     def test_createIncidentType(self, incidentType: str, hidden: bool) -> None: