diff --git a/code/game/gamemodes/nations/nations.dm b/code/game/gamemodes/nations/nations.dm
index 38a7633e6d4..ec180e07279 100644
--- a/code/game/gamemodes/nations/nations.dm
+++ b/code/game/gamemodes/nations/nations.dm
@@ -22,6 +22,9 @@ datum/game_mode/nations
 			split_teams()
 			spawn_flags()
 			populate_vars()
+			for(var/mob/M in player_list)
+				if(!istype(M,/mob/new_player))
+					M << sound('sound/effects/purge_siren.ogg')
 	return ..()
 
 /datum/game_mode/nations/send_intercept()
diff --git a/code/game/objects/items/devices/scanners.dm b/code/game/objects/items/devices/scanners.dm
index a4f2b29e8b9..121f4d9e098 100644
--- a/code/game/objects/items/devices/scanners.dm
+++ b/code/game/objects/items/devices/scanners.dm
@@ -19,6 +19,21 @@ REAGENT SCANNER
 	item_state = "electronic"
 	m_amt = 150
 	origin_tech = "magnets=1;engineering=1"
+	var/scan_range = 1
+	var/pulse_duration = 10
+
+/obj/item/device/t_scanner/longer_pulse
+	origin_tech = "magnets=2;engineering=2"
+	pulse_duration = 50
+
+/obj/item/device/t_scanner/extended_range
+	origin_tech = "magnets=1;engineering=3"
+	scan_range = 3
+
+/obj/item/device/t_scanner/extended_range/longer_pulse
+	origin_tech = "magnets=2;engineering=3"
+	scan_range = 3
+	pulse_duration = 50
 
 /obj/item/device/t_scanner/Destroy()
 	if(on)
@@ -39,7 +54,7 @@ REAGENT SCANNER
 		processing_objects.Remove(src)
 		return null
 
-	for(var/turf/T in range(1, src.loc) )
+	for(var/turf/T in range(scan_range, src.loc) )
 
 		if(!T.intact)
 			continue
@@ -51,7 +66,7 @@ REAGENT SCANNER
 
 			if(O.invisibility == 101)
 				O.invisibility = 0
-				spawn(10)
+				spawn(pulse_duration)
 					if(O)
 						var/turf/U = O.loc
 						if(U.intact)
@@ -65,6 +80,7 @@ REAGENT SCANNER
 						M.alpha = oldalpha
 
 		var/mob/living/M = locate() in T
+
 		if(M && M.invisibility == 2)
 			M.invisibility = 0
 			spawn(2)
diff --git a/code/modules/mob/living/carbon/human/human_attackhand.dm b/code/modules/mob/living/carbon/human/human_attackhand.dm
index 8b8411f7012..dbba84f5559 100644
--- a/code/modules/mob/living/carbon/human/human_attackhand.dm
+++ b/code/modules/mob/living/carbon/human/human_attackhand.dm
@@ -176,12 +176,24 @@
 					return W.afterattack(target,src)
 
 			var/randn = rand(1, 100)
-			if (randn <= 25)
-				apply_effect(4, WEAKEN, run_armor_check(affecting, "melee"))
+
+			if(!src.handcuffed)  // Bone White - disarm knockdown only occurs if you have an aggressive grab on the target,  Longer duration (8) to allow handcuffing.
+				//check for an aggressive grab
+				for (var/obj/item/weapon/grab/G in src.grabbed_by)
+					if (G.assailant == M && G.state >= GRAB_AGGRESSIVE)
+						world << "aggressive grab"
+						randn -= 30  // this value is the % chance of knockdown if you disarm someone whilst you have an aggressive grab.
+			else
+			//if target is handcuffed, always push them over
+				randn = 0
+
+			if (randn <= 0)
+				world << "push over success"
+				apply_effect(4, WEAKEN, run_armor_check(affecting, "melee")) // first var here is the length of the knockdown
 				playsound(loc, 'sound/weapons/thudswoosh.ogg', 50, 1, -1)
-				visible_message("\red <B>[M] has pushed [src]!</B>")
-				M.attack_log += text("\[[time_stamp()]\] <font color='red'>Pushed [src.name] ([src.ckey])</font>")
-				src.attack_log += text("\[[time_stamp()]\] <font color='orange'>Has been pushed by [M.name] ([M.ckey])</font>")
+				visible_message("\red <B>[M] has floored [src]!</B>")
+				M.attack_log += text("\[[time_stamp()]\] <font color='red'>Floored [src.name] ([src.ckey])</font>")
+				src.attack_log += text("\[[time_stamp()]\] <font color='orange'>Has been floored by [M.name] ([M.ckey])</font>")
 				if(!iscarbon(M))
 					LAssailant = null
 				else
diff --git a/sound/effects/purge_siren.ogg b/sound/effects/purge_siren.ogg
new file mode 100644
index 00000000000..1cdaca1f60f
Binary files /dev/null and b/sound/effects/purge_siren.ogg differ