diff --git a/client/src/components/airdefenserangelayer/AirDefenseRangeLayer.tsx b/client/src/components/airdefenserangelayer/AirDefenseRangeLayer.tsx
new file mode 100644
index 00000000..a92cdc82
--- /dev/null
+++ b/client/src/components/airdefenserangelayer/AirDefenseRangeLayer.tsx
@@ -0,0 +1,70 @@
+import { Circle, LayerGroup } from "react-leaflet";
+
+import Tgo from "../../api/tgo";
+import { selectTgos } from "../../api/tgosSlice";
+import { useAppSelector } from "../../app/hooks";
+
+interface TgoRangeCirclesProps {
+  tgo: Tgo;
+  blue: boolean;
+  detection?: boolean;
+}
+
+function colorFor(blue: boolean, detection: boolean) {
+  if (blue) {
+    return detection ? "#bb89ff" : "#0084ff";
+  }
+  return detection ? "#eee17b" : "#c85050";
+}
+
+const TgoRangeCircles = (props: TgoRangeCirclesProps) => {
+  const radii = props.detection
+    ? props.tgo.detection_ranges
+    : props.tgo.threat_ranges;
+  const color = colorFor(props.blue, props.detection === true);
+  const weight = props.detection ? 1 : 2;
+
+  return (
+    <>
+      {radii.map((radius) => {
+        return (
+          <Circle
+            center={props.tgo.position}
+            radius={radius}
+            color={color}
+            fill={false}
+            weight={weight}
+            interactive={false}
+          />
+        );
+      })}
+    </>
+  );
+};
+
+interface AirDefenseRangeLayerProps {
+  blue: boolean;
+  detection?: boolean;
+}
+
+export const AirDefenseRangeLayer = (props: AirDefenseRangeLayerProps) => {
+  const tgos = useAppSelector(selectTgos);
+  var allTgos: Tgo[] = [];
+  for (const tgoType of Object.values(tgos.tgosByType)) {
+    for (const tgo of tgoType) {
+      if (tgo.blue === props.blue) {
+        allTgos.push(tgo);
+      }
+    }
+  }
+
+  return (
+    <LayerGroup>
+      {allTgos.map((tgo) => {
+        return <TgoRangeCircles tgo={tgo} {...props}></TgoRangeCircles>;
+      })}
+    </LayerGroup>
+  );
+};
+
+export default AirDefenseRangeLayer;
diff --git a/client/src/components/airdefenserangelayer/index.ts b/client/src/components/airdefenserangelayer/index.ts
new file mode 100644
index 00000000..906609aa
--- /dev/null
+++ b/client/src/components/airdefenserangelayer/index.ts
@@ -0,0 +1 @@
+export { default } from "./AirDefenseRangeLayer";
diff --git a/client/src/components/liberationmap/LiberationMap.tsx b/client/src/components/liberationmap/LiberationMap.tsx
index 829e42a8..b95ceb20 100644
--- a/client/src/components/liberationmap/LiberationMap.tsx
+++ b/client/src/components/liberationmap/LiberationMap.tsx
@@ -2,6 +2,7 @@ import "./LiberationMap.css";
 
 import { LayersControl, MapContainer, ScaleControl } from "react-leaflet";
 
+import AirDefenseRangeLayer from "../airdefenserangelayer";
 import { BasemapLayer } from "react-esri-leaflet";
 import ControlPointsLayer from "../controlpointslayer";
 import FlightPlansLayer from "../flightplanslayer";
@@ -37,6 +38,18 @@ export default function LiberationMap(props: GameProps) {
             </LayersControl.Overlay>
           );
         })}
+        <LayersControl.Overlay name="Enemy SAM threat range" checked>
+          <AirDefenseRangeLayer blue={false} />
+        </LayersControl.Overlay>
+        <LayersControl.Overlay name="Enemy SAM detection range">
+          <AirDefenseRangeLayer blue={false} detection />
+        </LayersControl.Overlay>
+        <LayersControl.Overlay name="Allied SAM threat range">
+          <AirDefenseRangeLayer blue={true} />
+        </LayersControl.Overlay>
+        <LayersControl.Overlay name="Allied SAM detection range">
+          <AirDefenseRangeLayer blue={true} detection />
+        </LayersControl.Overlay>
         <LayersControl.Overlay name="All blue flight plans" checked>
           <FlightPlansLayer blue={true} />
         </LayersControl.Overlay>
diff --git a/game/server/tgos/models.py b/game/server/tgos/models.py
index a7b44e8b..2ae03098 100644
--- a/game/server/tgos/models.py
+++ b/game/server/tgos/models.py
@@ -25,7 +25,9 @@ class TgoJs(BaseModel):
             detection_ranges = []
         else:
             threat_ranges = [tgo.threat_range(group).meters for group in tgo.groups]
-            detection_ranges = [tgo.threat_range(group).meters for group in tgo.groups]
+            detection_ranges = [
+                tgo.detection_range(group).meters for group in tgo.groups
+            ]
         return TgoJs(
             name=tgo.name,
             control_point_name=tgo.control_point.name,