diff --git a/resources/images/buildings/silo4-reloading.png b/resources/images/buildings/silo4-reloading.png
new file mode 100755
index 000000000..f7c22aa90
Binary files /dev/null and b/resources/images/buildings/silo4-reloading.png differ
diff --git a/src/client/graphics/layers/StructureLayer.ts b/src/client/graphics/layers/StructureLayer.ts
index b991c81eb..9e8fa4ea5 100644
--- a/src/client/graphics/layers/StructureLayer.ts
+++ b/src/client/graphics/layers/StructureLayer.ts
@@ -6,6 +6,7 @@ import { EventBus } from "../../../core/EventBus";
 import anchorIcon from "../../../../resources/images/buildings/port1.png";
 import missileSiloIcon from "../../../../resources/images/buildings/silo1.png";
 import SAMMissileIcon from "../../../../resources/images/buildings/silo4.png";
+import SAMMissileReloadingIcon from "../../../../resources/images/buildings/silo4-reloading.png";
 import shieldIcon from "../../../../resources/images/buildings/fortAlt2.png";
 import cityIcon from "../../../../resources/images/buildings/cityAlt1.png";
 import { GameView, UnitView } from "../../../core/game/GameView";
@@ -14,6 +15,7 @@ import { GameUpdateType } from "../../../core/game/GameUpdates";
 import { euclDistFN } from "../../../core/game/GameMap";
 
 const underConstructionColor = colord({ r: 150, g: 150, b: 150 });
+const reloadingColor = colord({ r: 255, g: 0, b: 0 });
 
 interface UnitRenderConfig {
   icon: string;
@@ -41,17 +43,17 @@ export class StructureLayer implements Layer {
     },
     [UnitType.MissileSilo]: {
       icon: missileSiloIcon,
-      borderRadius: 8,
+      borderRadius: 9.5,
       territoryRadius: 6,
     },
     [UnitType.DefensePost]: {
       icon: shieldIcon,
-      borderRadius: 8,
+      borderRadius: 9.5,
       territoryRadius: 6,
     },
     [UnitType.SAMLauncher]: {
       icon: SAMMissileIcon,
-      borderRadius: 8,
+      borderRadius: 10,
       territoryRadius: 6,
     },
   };
@@ -62,32 +64,41 @@ export class StructureLayer implements Layer {
   ) {
     this.theme = game.config().theme();
     this.loadIconData();
+    this.loadIcon("reloadingSam", {
+      icon: SAMMissileReloadingIcon,
+      borderRadius: 8.525,
+      territoryRadius: 6.525,
+    });
+  }
+
+  private loadIcon(unitType: string, config: UnitRenderConfig) {
+    const image = new Image();
+    image.src = config.icon;
+    image.onload = () => {
+      // Create temporary canvas for icon processing
+      const tempCanvas = document.createElement("canvas");
+      const tempContext = tempCanvas.getContext("2d");
+      tempCanvas.width = image.width;
+      tempCanvas.height = image.height;
+
+      // Draw the unit icon
+      tempContext.drawImage(image, 0, 0);
+      const iconData = tempContext.getImageData(
+        0,
+        0,
+        tempCanvas.width,
+        tempCanvas.height,
+      );
+      this.unitIcons.set(unitType, iconData);
+      console.log(
+        `icond data width height: ${iconData.width}, ${iconData.height}`,
+      );
+    };
   }
 
   private loadIconData() {
     Object.entries(this.unitConfigs).forEach(([unitType, config]) => {
-      const image = new Image();
-      image.src = config.icon;
-      image.onload = () => {
-        // Create temporary canvas for icon processing
-        const tempCanvas = document.createElement("canvas");
-        const tempContext = tempCanvas.getContext("2d");
-        tempCanvas.width = image.width;
-        tempCanvas.height = image.height;
-
-        // Draw the unit icon
-        tempContext.drawImage(image, 0, 0);
-        const iconData = tempContext.getImageData(
-          0,
-          0,
-          tempCanvas.width,
-          tempCanvas.height,
-        );
-        this.unitIcons.set(unitType, iconData);
-        console.log(
-          `icond data width height: ${iconData.width}, ${iconData.height}`,
-        );
-      };
+      this.loadIcon(unitType, config);
     });
   }
 
@@ -132,10 +143,17 @@ export class StructureLayer implements Layer {
 
   private handleUnitRendering(unit: UnitView) {
     const unitType = unit.constructionType() ?? unit.type();
+    let iconType = unitType;
     if (!this.isUnitTypeSupported(unitType)) return;
 
     const config = this.unitConfigs[unitType];
-    const icon = this.unitIcons.get(unitType);
+    let icon: ImageData;
+
+    if (unitType == UnitType.SAMLauncher && unit.isSamCooldown()) {
+      icon = this.unitIcons.get("reloadingSam");
+    } else {
+      icon = this.unitIcons.get(iconType);
+    }
 
     if (!config || !icon) return;
 
@@ -151,6 +169,13 @@ export class StructureLayer implements Layer {
       return;
     }
 
+    let borderColor = this.theme.borderColor(unit.owner().info());
+    if (unitType == UnitType.SAMLauncher && unit.isSamCooldown()) {
+      borderColor = reloadingColor;
+    } else if (unit.type() == UnitType.Construction) {
+      borderColor = underConstructionColor;
+    }
+
     // Draw border and territory
     for (const tile of this.game.bfs(
       unit.tile(),
@@ -158,9 +183,7 @@ export class StructureLayer implements Layer {
     )) {
       this.paintCell(
         new Cell(this.game.x(tile), this.game.y(tile)),
-        unit.type() == UnitType.Construction
-          ? underConstructionColor
-          : this.theme.borderColor(unit.owner().info()),
+        borderColor,
         255,
       );
     }
diff --git a/src/core/configuration/Config.ts b/src/core/configuration/Config.ts
index e2c8ed4c2..634c1b3b8 100644
--- a/src/core/configuration/Config.ts
+++ b/src/core/configuration/Config.ts
@@ -170,6 +170,7 @@ export interface Config {
 
 export interface Theme {
   territoryColor(playerInfo: PlayerInfo): Colord;
+  specialBuildingColor(playerInfo: PlayerInfo): Colord;
   borderColor(playerInfo: PlayerInfo): Colord;
   defendedBorderColor(playerInfo: PlayerInfo): Colord;
   terrainColor(gm: GameMap, tile: TileRef): Colord;
diff --git a/src/core/configuration/PastelTheme.ts b/src/core/configuration/PastelTheme.ts
index 50c5278c4..a1c3a1ecc 100644
--- a/src/core/configuration/PastelTheme.ts
+++ b/src/core/configuration/PastelTheme.ts
@@ -256,6 +256,15 @@ export const pastelTheme = new (class implements Theme {
     return playerInfo.playerType == PlayerType.Human ? "#000000" : "#4D4D4D";
   }
 
+  specialBuildingColor(playerInfo: PlayerInfo): Colord {
+    const tc = this.territoryColor(playerInfo).rgba;
+    return colord({
+      r: Math.max(tc.r - 50, 0),
+      g: Math.max(tc.g - 50, 0),
+      b: Math.max(tc.b - 50, 0),
+    });
+  }
+
   borderColor(playerInfo: PlayerInfo): Colord {
     const tc = this.territoryColor(playerInfo).rgba;
     return colord({
diff --git a/src/core/configuration/PastelThemeDark.ts b/src/core/configuration/PastelThemeDark.ts
index cea7fc82e..a7b030889 100644
--- a/src/core/configuration/PastelThemeDark.ts
+++ b/src/core/configuration/PastelThemeDark.ts
@@ -256,6 +256,15 @@ export const pastelThemeDark = new (class implements Theme {
     return playerInfo.playerType == PlayerType.Human ? "#ffffff" : "#e6e6e6";
   }
 
+  specialBuildingColor(playerInfo: PlayerInfo): Colord {
+    const tc = this.territoryColor(playerInfo).rgba;
+    return colord({
+      r: Math.max(tc.r - 50, 0),
+      g: Math.max(tc.g - 50, 0),
+      b: Math.max(tc.b - 50, 0),
+    });
+  }
+
   borderColor(playerInfo: PlayerInfo): Colord {
     const tc = this.territoryColor(playerInfo).rgba;
     return colord({
diff --git a/src/core/execution/SAMLauncherExecution.ts b/src/core/execution/SAMLauncherExecution.ts
index cbf2f583a..73a0ee8bb 100644
--- a/src/core/execution/SAMLauncherExecution.ts
+++ b/src/core/execution/SAMLauncherExecution.ts
@@ -92,8 +92,15 @@ export class SAMLauncherExecution implements Execution {
         );
       })[0] ?? null;
 
+    const cooldown =
+      this.lastMissileAttack != 0 &&
+      this.mg.ticks() - this.lastMissileAttack <= this.missileAttackRate;
+    if (this.post.isSamCooldown() != cooldown) {
+      this.post.setSamCooldown(cooldown);
+    }
+
     if (this.target != null) {
-      if (this.mg.ticks() - this.lastMissileAttack > this.missileAttackRate) {
+      if (!this.post.isSamCooldown()) {
         this.lastMissileAttack = this.mg.ticks();
         this.mg.addExecution(
           new SAMMissileExecution(
diff --git a/src/core/game/Game.ts b/src/core/game/Game.ts
index e3244781b..77c9a7d94 100644
--- a/src/core/game/Game.ts
+++ b/src/core/game/Game.ts
@@ -235,6 +235,8 @@ export interface Unit {
   setWarshipTarget(target: Unit): void; // warship only
   warshipTarget(): Unit;
 
+  setSamCooldown(isCoolingDown: boolean): void; // Only for sam
+  isSamCooldown(): boolean;
   setDstPort(dstPort: Unit): void;
   dstPort(): Unit; // Only for trade ships
   detonationDst(): TileRef; // Only for nukes
diff --git a/src/core/game/GameUpdates.ts b/src/core/game/GameUpdates.ts
index 7efaab80f..9461a05b4 100644
--- a/src/core/game/GameUpdates.ts
+++ b/src/core/game/GameUpdates.ts
@@ -74,6 +74,7 @@ export interface UnitUpdate {
   warshipTargetId?: number;
   health?: number;
   constructionType?: UnitType;
+  isSamCooldown?: boolean;
 }
 
 export interface AttackUpdate {
diff --git a/src/core/game/GameView.ts b/src/core/game/GameView.ts
index e0ebf40f8..6a04f96ad 100644
--- a/src/core/game/GameView.ts
+++ b/src/core/game/GameView.ts
@@ -111,6 +111,9 @@ export class UnitView {
     }
     return this.data.warshipTargetId;
   }
+  isSamCooldown(): boolean {
+    return this.data.isSamCooldown;
+  }
 }
 
 export class PlayerView {
diff --git a/src/core/game/UnitImpl.ts b/src/core/game/UnitImpl.ts
index 43cb48c14..aaa783508 100644
--- a/src/core/game/UnitImpl.ts
+++ b/src/core/game/UnitImpl.ts
@@ -18,6 +18,7 @@ export class UnitImpl implements Unit {
 
   private _constructionType: UnitType = undefined;
 
+  private _isSamCooldown: boolean;
   private _dstPort: Unit | null = null; // Only for trade ships
   private _detonationDst: TileRef | null = null; // Only for nukes
   private _warshipTarget: Unit | null = null;
@@ -59,6 +60,7 @@ export class UnitImpl implements Unit {
       dstPortId: dstPort ? dstPort.id() : null,
       warshipTargetId: warshipTarget ? warshipTarget.id() : null,
       detonationDst: this.detonationDst(),
+      isSamCooldown: this.isSamCooldown() ? this.isSamCooldown() : null,
     };
   }
 
@@ -182,6 +184,15 @@ export class UnitImpl implements Unit {
     return this._dstPort;
   }
 
+  setSamCooldown(cooldown: boolean): void {
+    this._isSamCooldown = cooldown;
+    this.mg.addUpdate(this.toUpdate());
+  }
+
+  isSamCooldown(): boolean {
+    return this._isSamCooldown;
+  }
+
   setDstPort(dstPort: Unit): void {
     this._dstPort = dstPort;
   }