diff --git a/code/ATMOSPHERICS/pipeline.dm b/code/ATMOSPHERICS/pipeline.dm
index aa65828231b..9a30d3936d9 100644
--- a/code/ATMOSPHERICS/pipeline.dm
+++ b/code/ATMOSPHERICS/pipeline.dm
@@ -220,11 +220,12 @@ var/pipenetwarnings = 10
 		total_thermal_energy += G.thermal_energy()
 		total_heat_capacity += G.heat_capacity()
 
-		total_gas_mixture.temperature = total_heat_capacity ? total_thermal_energy/total_heat_capacity : 0
+	total_gas_mixture.temperature = total_heat_capacity ? total_thermal_energy/total_heat_capacity : 0
 
 	if(total_gas_mixture.volume > 0)
 		//Update individual gas_mixtures by volume ratio
-		for(var/datum/gas_mixture/G in GL)
+		for(var/i in GL)
+			var/datum/gas_mixture/G = i
 			G.copy_from(total_gas_mixture)
 			var/list/G_gases = G.gases
 			for(var/id in G_gases)
diff --git a/code/__HELPERS/unsorted.dm b/code/__HELPERS/unsorted.dm
index 5497e1ba8b1..20d35846a87 100644
--- a/code/__HELPERS/unsorted.dm
+++ b/code/__HELPERS/unsorted.dm
@@ -1182,3 +1182,35 @@ B --><-- A
 	for(var/atom/location = A.loc, location, location = location.loc)
 		if(location == src)
 			return 1
+
+proc/add_to_proximity_list(atom/A, range)
+	var/turf/T = get_turf(A)
+	var/list/L = block(locate(T.x - range, T.y - range, T.z), locate(T.x + range, T.y + range, T.z))
+	for(var/B in L)
+		var/turf/C = B
+		C.proximity_checkers |= A
+	return L
+
+proc/remove_from_proximity_list(atom/A, range)
+	var/turf/T = get_turf(A)
+	var/list/L = block(locate(T.x - range, T.y - range, T.z), locate(T.x + range, T.y + range, T.z))
+	for(var/B in L)
+		var/turf/C = B
+		C.proximity_checkers.Remove(A)
+
+proc/shift_proximity(atom/checker, atom/A, range, atom/B, newrange)
+	var/turf/T = get_turf(A)
+	var/turf/Q = get_turf(B)
+	if(T == Q && range == newrange)
+		return 0
+	var/list/L = block(locate(T.x - range, T.y - range, T.z), locate(T.x + range, T.y + range, T.z))
+	var/list/M = block(locate(Q.x - newrange, Q.y - newrange, Q.z), locate(Q.x + newrange, Q.y + newrange, Q.z))
+	var/list/N = L - M
+	var/list/O = M - L
+	for(var/C in N)
+		var/turf/D = C
+		D.proximity_checkers.Remove(checker)
+	for(var/E in O)
+		var/turf/F = E
+		F.proximity_checkers |= checker
+	return 1
diff --git a/code/game/machinery/camera/motion.dm b/code/game/machinery/camera/motion.dm
index b0b2b840af1..a7a0f0a847e 100644
--- a/code/game/machinery/camera/motion.dm
+++ b/code/game/machinery/camera/motion.dm
@@ -5,6 +5,16 @@
 	var/area/ai_monitored/area_motion = null
 	var/alarm_delay = 30 // Don't forget, there's another 3 seconds in queueAlarm()
 
+/obj/machinery/camera/New()
+	add_to_proximity_list(src, 1) //1 was default of everything
+
+/obj/machinery/camera/Move()
+	remove_from_proximity_list(src, 1)
+	..()
+
+/obj/machinery/camera/Destroy()
+	remove_from_proximity_list(src, 1)
+	..()
 
 /obj/machinery/camera/process()
 	// motion camera event loop
diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index 304d927c9dd..7b57aae3915 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -1113,11 +1113,6 @@ var/list/airlock_overlays = list()
 //Airlock is passable if it is open (!density), bot has access, and is not bolted shut or powered off)
 	return !density || (check_access(ID) && !locked && hasPower())
 
-/obj/machinery/door/airlock/HasProximity(atom/movable/AM as mob|obj)
-	for (var/obj/A in contents)
-		A.HasProximity(AM)
-	return
-
 /obj/machinery/door/airlock/emag_act(mob/user)
 	if(!operating && density && hasPower() && !emagged)
 		operating = 1
diff --git a/code/game/machinery/flasher.dm b/code/game/machinery/flasher.dm
index c261956806f..00f5ad0e24b 100644
--- a/code/game/machinery/flasher.dm
+++ b/code/game/machinery/flasher.dm
@@ -26,6 +26,10 @@
 	..() // ..() is EXTREMELY IMPORTANT, never forget to add it
 	bulb = new /obj/item/device/assembly/flash/handheld(src)
 
+/obj/machinery/flasher/Move()
+	remove_from_proximity_list(src, range)
+	..()
+
 /obj/machinery/flasher/power_change()
 	if (powered() && anchored && bulb)
 		stat &= ~NOPOWER
@@ -127,11 +131,13 @@
 			overlays += "[base_state]-s"
 			anchored = 1
 			power_change()
+			add_to_proximity_list(src, range)
 		else
 			user << "<span class='notice'>[src] can now be moved.</span>"
 			overlays.Cut()
 			anchored = 0
 			power_change()
+			remove_from_proximity_list(src, range)
 
 	else
 		..()
\ No newline at end of file
diff --git a/code/game/objects/effects/aliens.dm b/code/game/objects/effects/aliens.dm
index 92b74435c6d..cc54f73b47c 100644
--- a/code/game/objects/effects/aliens.dm
+++ b/code/game/objects/effects/aliens.dm
@@ -318,6 +318,9 @@
 	spawn(rand(MIN_GROWTH_TIME, MAX_GROWTH_TIME))
 		Grow()
 
+/obj/structure/alien/egg/Destroy()
+	remove_from_proximity_list(src, 1)
+	..()
 
 /obj/structure/alien/egg/attack_paw(mob/living/user)
 	return attack_hand(user)
@@ -348,10 +351,11 @@
 /obj/structure/alien/egg/proc/Grow()
 	icon_state = "egg"
 	status = GROWN
-
+	add_to_proximity_list(src, 1)
 
 /obj/structure/alien/egg/proc/Burst(kill = 1)	//drops and kills the hugger if any is remaining
 	if(status == GROWN || status == GROWING)
+		remove_from_proximity_list(src, 1)
 		icon_state = "egg_hatched"
 		flick("egg_opening", src)
 		status = BURSTING
@@ -368,6 +372,9 @@
 							child.Attach(M)
 							break
 
+/obj/structure/alien/egg/Move()
+	remove_from_proximity_list(src, 1)
+	..()
 
 /obj/structure/alien/egg/bullet_act(obj/item/projectile/Proj)
 	health -= Proj.damage
diff --git a/code/game/objects/items/devices/transfer_valve.dm b/code/game/objects/items/devices/transfer_valve.dm
index eb13de0ce1a..a8de11836a8 100644
--- a/code/game/objects/items/devices/transfer_valve.dm
+++ b/code/game/objects/items/devices/transfer_valve.dm
@@ -60,12 +60,6 @@
 		attacher = user
 	return
 
-
-/obj/item/device/transfer_valve/HasProximity(atom/movable/AM as mob|obj)
-	if(!attached_device)
-		return
-	attached_device.HasProximity(AM)
-	return
 /obj/item/device/transfer_valve/attack_self(mob/user)
 	user.set_machine(src)
 	var/dat = {"<B> Valve properties: </B>
diff --git a/code/game/objects/items/weapons/grenades/chem_grenade.dm b/code/game/objects/items/weapons/grenades/chem_grenade.dm
index 56031b41c4e..509999d5f92 100644
--- a/code/game/objects/items/weapons/grenades/chem_grenade.dm
+++ b/code/game/objects/items/weapons/grenades/chem_grenade.dm
@@ -143,9 +143,6 @@
 /obj/item/weapon/grenade/chem_grenade/receive_signal()
 	prime()
 
-/obj/item/weapon/grenade/chem_grenade/HasProximity(atom/movable/AM)
-	if(nadeassembly)
-		nadeassembly.HasProximity(AM)
 
 /obj/item/weapon/grenade/chem_grenade/Crossed(atom/movable/AM)
 	if(nadeassembly)
diff --git a/code/game/objects/items/weapons/stunbaton.dm b/code/game/objects/items/weapons/stunbaton.dm
index 43a79de4c46..79a25e3cd0b 100644
--- a/code/game/objects/items/weapons/stunbaton.dm
+++ b/code/game/objects/items/weapons/stunbaton.dm
@@ -181,3 +181,12 @@
 	stunforce = 5
 	hitcost = 2500
 	slot_flags = null
+	var/obj/item/device/assembly/igniter/sparkler = 0
+
+/obj/item/weapon/melee/baton/cattleprod/New()
+	..()
+	sparkler = new (src)
+
+/obj/item/weapon/melee/baton/cattleprod/baton_stun()
+	if(sparkler.activate())
+		..()
\ No newline at end of file
diff --git a/code/game/objects/items/weapons/weaponry.dm b/code/game/objects/items/weapons/weaponry.dm
index 9087ec8dc77..910c3dfc84a 100644
--- a/code/game/objects/items/weapons/weaponry.dm
+++ b/code/game/objects/items/weapons/weaponry.dm
@@ -117,7 +117,7 @@
 		qdel(I)
 		qdel(src)
 
-	else if(istype(I, /obj/item/weapon/wirecutters) && !(I.flags & NODROP))
+	else if(istype(I, /obj/item/device/assembly/igniter) && !(I.flags & NODROP))
 		var/obj/item/weapon/melee/baton/cattleprod/P = new /obj/item/weapon/melee/baton/cattleprod
 
 		if(!remove_item_from_storage(user))
@@ -125,7 +125,7 @@
 		user.unEquip(I)
 
 		user.put_in_hands(P)
-		user << "<span class='notice'>You fasten the wirecutters to the top of the rod with the cable, prongs outward.</span>"
+		user << "<span class='notice'>You fasten [I] to the top of the rod with the cable.</span>"
 		qdel(I)
 		qdel(src)
 
diff --git a/code/game/turfs/turf.dm b/code/game/turfs/turf.dm
index a02fb4c3bca..ae925323705 100644
--- a/code/game/turfs/turf.dm
+++ b/code/game/turfs/turf.dm
@@ -26,6 +26,8 @@
 
 	flags = 0
 
+	var/list/proximity_checkers = list()
+
 	var/image/obscured	//camerachunks
 /turf/New()
 	..()
@@ -91,12 +93,9 @@
 	return 1 //Nothing found to block so return success!
 
 /turf/Entered(atom/movable/M)
-	var/loopsanity = 100
-	for(var/atom/A in range(1))
-		if(loopsanity == 0)
-			break
-		loopsanity--
-		A.HasProximity(M, 1)
+	for(var/A in proximity_checkers)
+		var/atom/B = A
+		B.HasProximity(M)
 
 /turf/proc/is_plasteel_floor()
 	return 0
diff --git a/code/modules/assembly/assembly.dm b/code/modules/assembly/assembly.dm
index e55cf0149b2..a999ed9e2ee 100644
--- a/code/modules/assembly/assembly.dm
+++ b/code/modules/assembly/assembly.dm
@@ -25,6 +25,10 @@
 	var/const/WIRE_RADIO_RECEIVE = 8		//Allows Pulsed(1) to call Activate()
 	var/const/WIRE_RADIO_PULSE = 16		//Allows Pulse(1) to send a radio message
 
+/obj/item/device/assembly/proc/on_attach()
+
+/obj/item/device/assembly/proc/on_detach()
+
 /obj/item/device/assembly/proc/holder_movement()							//Called when the holder is moved
 	return
 
diff --git a/code/modules/assembly/bomb.dm b/code/modules/assembly/bomb.dm
index 3a446749607..81e4a92f2e6 100644
--- a/code/modules/assembly/bomb.dm
+++ b/code/modules/assembly/bomb.dm
@@ -69,10 +69,6 @@
 	else
 		bombtank.release()
 
-/obj/item/device/onetankbomb/HasProximity(atom/movable/AM as mob|obj)
-	if(bombassembly)
-		bombassembly.HasProximity(AM)
-
 /obj/item/device/onetankbomb/Crossed(atom/movable/AM as mob|obj) //for mousetraps
 	if(bombassembly)
 		bombassembly.Crossed(AM)
diff --git a/code/modules/assembly/holder.dm b/code/modules/assembly/holder.dm
index 6be68eb1a84..a4b7720d0c8 100644
--- a/code/modules/assembly/holder.dm
+++ b/code/modules/assembly/holder.dm
@@ -55,13 +55,6 @@
 	if(master)
 		master.update_icon()
 
-/obj/item/device/assembly_holder/HasProximity(atom/movable/AM as mob|obj)
-	if(a_left)
-		a_left.HasProximity(AM)
-	if(a_right)
-		a_right.HasProximity(AM)
-
-
 /obj/item/device/assembly_holder/Crossed(atom/movable/AM as mob|obj)
 	if(a_left)
 		a_left.Crossed(AM)
diff --git a/code/modules/assembly/proximity.dm b/code/modules/assembly/proximity.dm
index 79c8b67c0b5..ce2f468e0d6 100644
--- a/code/modules/assembly/proximity.dm
+++ b/code/modules/assembly/proximity.dm
@@ -9,6 +9,9 @@
 	var/scanning = 0
 	var/timing = 0
 	var/time = 10
+	var/sensitivity = 1
+	var/atom/oldloc
+	var/list/turfs_around = list()
 
 /obj/item/device/assembly/prox_sensor/proc/toggle_scan()
 
@@ -19,12 +22,19 @@
 /obj/item/device/assembly/prox_sensor/New()
 	..()
 	SSobj.processing |= src
+	oldloc = loc
 
 /obj/item/device/assembly/prox_sensor/describe()
 	if(timing)
 		return "<span class='notice'>The proximity sensor is arming.</span>"
 	return "The proximity sensor is [scanning?"armed":"disarmed"]."
 
+/obj/item/device/assembly/prox_sensor/on_attach(datum/wires/w)
+	handle_move(w.holder)
+
+/obj/item/device/assembly/prox_sensor/on_detach(datum/wires/w)
+	handle_move(w.holder.loc)
+
 /obj/item/device/assembly/prox_sensor/activate()
 	if(!..())
 		return 0//Cooldown check
@@ -35,12 +45,9 @@
 
 /obj/item/device/assembly/prox_sensor/toggle_secure()
 	secured = !secured
-	if(secured)
-		SSobj.processing |= src
-	else
+	if(!secured)
 		scanning = 0
 		timing = 0
-		SSobj.processing.Remove(src)
 	update_icon()
 	return secured
 
@@ -52,7 +59,7 @@
 
 
 /obj/item/device/assembly/prox_sensor/sense()
-	if((!secured)||(!scanning)||(cooldown > 0))
+	if((!secured)||(cooldown > 0))
 		return 0
 	pulse(0)
 	audible_message("\icon[src] *beep* *beep*", null, 3)
@@ -66,22 +73,32 @@
 		time--
 		if(time <= 0)
 			timing = 0
-			toggle_scan()
+			toggle_scan(1)
 			time = initial(time)
-
+	handle_move(get_turf(loc))
 
 /obj/item/device/assembly/prox_sensor/dropped()
-	spawn(0)
-		sense()
+	if(scanning)
+		spawn(0)
+			sense()
 
 
-/obj/item/device/assembly/prox_sensor/toggle_scan()
+/obj/item/device/assembly/prox_sensor/toggle_scan(scan)
 	if(!secured)
 		return 0
-	scanning = !scanning
+	scanning = scan
+	if(scanning)
+		add_to_proximity_list(src, sensitivity)
+	else
+		remove_from_proximity_list(src, sensitivity)
+	oldloc = get_turf(loc)
 	update_icon()
 
-
+/obj/item/device/assembly/prox_sensor/proc/sensitivity_change(value)
+	var/sense = min(max(sensitivity + value, 0), 5)
+	if(scanning)
+		shift_proximity(src, oldloc, sensitivity, loc, sense)
+	sensitivity = sense
 
 /obj/item/device/assembly/prox_sensor/update_icon()
 	overlays.Cut()
@@ -96,11 +113,15 @@
 		holder.update_icon()
 	return
 
+/obj/item/device/assembly/prox_sensor/proc/handle_move(atom/newloc)
+	if(scanning)
+		if(shift_proximity(src, oldloc, sensitivity, newloc, sensitivity))
+			sense()
+			oldloc = newloc
 
-/obj/item/device/assembly/prox_sensor/Move()
+/obj/item/device/assembly/prox_sensor/Move(newloc)
 	..()
-	sense()
-	return
+	handle_move(newloc)
 
 
 /obj/item/device/assembly/prox_sensor/interact(mob/user)//TODO: Change this to the wires thingy
@@ -108,7 +129,8 @@
 		var/second = time % 60
 		var/minute = (time - second) / 60
 		var/dat = "<TT><B>Proximity Sensor</B>\n[(timing ? "<A href='?src=\ref[src];time=0'>Arming</A>" : "<A href='?src=\ref[src];time=1'>Not Arming</A>")] [minute]:[second]\n<A href='?src=\ref[src];tp=-30'>-</A> <A href='?src=\ref[src];tp=-1'>-</A> <A href='?src=\ref[src];tp=1'>+</A> <A href='?src=\ref[src];tp=30'>+</A>\n</TT>"
-		dat += "<BR><A href='?src=\ref[src];scanning=1'>[scanning?"Armed":"Unarmed"]</A> (Movement sensor active when armed!)"
+		dat += "<BR><A href='?src=\ref[src];scanning=[scanning?"0'>Armed":"1'>Unarmed"]</A> (Movement sensor active when armed!)"
+		dat += "<BR>Detection range: <A href='?src=\ref[src];sense=down'>-</A> [sensitivity] <A href='?src=\ref[src];sense=up'>+</A>"
 		dat += "<BR><BR><A href='?src=\ref[src];refresh=1'>Refresh</A>"
 		dat += "<BR><BR><A href='?src=\ref[src];close=1'>Close</A>"
 		user << browse(dat, "window=prox")
@@ -123,8 +145,11 @@
 		onclose(usr, "prox")
 		return
 
+	if(href_list["sense"])
+		sensitivity_change(((href_list["sense"] == "up") ? 1 : -1))
+
 	if(href_list["scanning"])
-		toggle_scan()
+		toggle_scan(text2num(href_list["scanning"]))
 
 	if(href_list["time"])
 		timing = text2num(href_list["time"])
diff --git a/code/modules/assembly/timer.dm b/code/modules/assembly/timer.dm
index e889d6fc723..3432899486a 100644
--- a/code/modules/assembly/timer.dm
+++ b/code/modules/assembly/timer.dm
@@ -8,6 +8,8 @@
 
 	var/timing = 0
 	var/time = 5
+	var/saved_time = 5
+	var/loop = 0
 
 
 /obj/item/device/assembly/timer/New()
@@ -47,6 +49,8 @@
 	cooldown = 2
 	spawn(10)
 		process_cooldown()
+		if(loop)
+			timing = 1
 	update_icon()
 
 
@@ -56,7 +60,7 @@
 		if(time <= 0)
 			timing = 0
 			timer_end()
-			time = initial(time)
+			time = saved_time
 
 
 /obj/item/device/assembly/timer/update_icon()
@@ -74,6 +78,7 @@
 		var/second = time % 60
 		var/minute = (time - second) / 60
 		var/dat = "<TT><B>Timing Unit</B>\n[(timing ? "<A href='?src=\ref[src];time=0'>Timing</A>" : "<A href='?src=\ref[src];time=1'>Not Timing</A>")] [minute]:[second]\n<A href='?src=\ref[src];tp=-30'>-</A> <A href='?src=\ref[src];tp=-1'>-</A> <A href='?src=\ref[src];tp=1'>+</A> <A href='?src=\ref[src];tp=30'>+</A>\n</TT>"
+		dat += "<BR><BR><A href='?src=\ref[src];repeat=[(loop ? "0'>Stop repeating" : "1'>Set to repeat")]</A>"
 		dat += "<BR><BR><A href='?src=\ref[src];refresh=1'>Refresh</A>"
 		dat += "<BR><BR><A href='?src=\ref[src];close=1'>Close</A>"
 		var/datum/browser/popup = new(user, "timer", name)
@@ -96,11 +101,14 @@
 			bombers += timer_message
 			log_game("[key_name(usr)] activated [src] attachment for [loc]")
 		update_icon()
+	if(href_list["repeat"])
+		loop = text2num(href_list["repeat"])
 
 	if(href_list["tp"])
 		var/tp = text2num(href_list["tp"])
 		time += tp
 		time = min(max(round(time), 1), 600)
+		saved_time = time
 
 	if(href_list["close"])
 		usr << browse(null, "window=timer")
diff --git a/code/modules/assembly/voice.dm b/code/modules/assembly/voice.dm
index 9364743c5db..71ef85ef8c5 100644
--- a/code/modules/assembly/voice.dm
+++ b/code/modules/assembly/voice.dm
@@ -11,20 +11,66 @@
 	verb_exclaim = "beeps"
 	var/listening = 0
 	var/recorded = "" //the activation message
+	var/mode = 1
+	var/global/list/modes = list("inclusive",
+								 "exclusive",
+								 "recognizer",
+								 "voice sensor")
 
 /obj/item/device/assembly/voice/Hear(message, atom/movable/speaker, message_langs, raw_message, radio_freq, list/spans)
 	if(speaker == src)
 		return
 
 	if(listening && !radio_freq)
-		recorded = raw_message
-		listening = 0
-		say("Activation message is '[recorded]'.")
+		record_speech(speaker, raw_message)
 	else
-		if(findtextEx(raw_message, recorded))
+		if(check_activation(speaker, raw_message))
 			spawn(10)
 				pulse(0)
 
+/obj/item/device/assembly/voice/proc/record_speech(atom/movable/speaker, raw_message)
+	switch(mode)
+		if(1)
+			recorded = raw_message
+			listening = 0
+			say("Activation message is '[recorded]'.")
+		if(2)
+			recorded = raw_message
+			listening = 0
+			say("Activation message is '[recorded]'.")
+		if(3)
+			recorded = speaker.GetVoice()
+			listening = 0
+			say("Your voice pattern is saved.")
+		if(4)
+			if(length(raw_message))
+				spawn(10)
+					pulse(0)
+
+/obj/item/device/assembly/voice/proc/check_activation(atom/movable/speaker, raw_message)
+	. = 0
+	switch(mode)
+		if(1)
+			if(findtextEx(raw_message, recorded))
+				. = 1
+		if(2)
+			if(raw_message == recorded)
+				. = 1
+		if(3)
+			if(speaker.GetVoice() == recorded)
+				. = 1
+		if(4)
+			if(length(raw_message))
+				. = 1
+
+/obj/item/device/assembly/voice/attackby(obj/item/weapon/W, mob/user, params)
+	if(istype(W, /obj/item/device/multitool))
+		mode %= modes.len
+		mode++
+		user << "You set [src] into a [modes[mode]] mode."
+		listening = 0
+		recorded = ""
+
 /obj/item/device/assembly/voice/activate()
 	if(secured)
 		if(!holder)
diff --git a/code/modules/crafting/recipes.dm b/code/modules/crafting/recipes.dm
index 1b242b34cfa..76e0cead24a 100644
--- a/code/modules/crafting/recipes.dm
+++ b/code/modules/crafting/recipes.dm
@@ -63,7 +63,7 @@
 	result = /obj/item/weapon/melee/baton/cattleprod
 	reqs = list(/obj/item/weapon/restraints/handcuffs/cable = 1,
 				/obj/item/stack/rods = 1,
-				/obj/item/weapon/wirecutters = 1,
+				/obj/item/device/assembly/igniter = 1,
 				/obj/item/weapon/stock_parts/cell = 1)
 	time = 80
 	parts = list(/obj/item/weapon/stock_parts/cell = 1)
diff --git a/icons/mob/inhands/items_lefthand.dmi b/icons/mob/inhands/items_lefthand.dmi
index 5093003a035..8e8cdeb2fc2 100644
Binary files a/icons/mob/inhands/items_lefthand.dmi and b/icons/mob/inhands/items_lefthand.dmi differ
diff --git a/icons/mob/inhands/items_righthand.dmi b/icons/mob/inhands/items_righthand.dmi
index f5868458340..37d22120d7d 100644
Binary files a/icons/mob/inhands/items_righthand.dmi and b/icons/mob/inhands/items_righthand.dmi differ
diff --git a/icons/obj/weapons.dmi b/icons/obj/weapons.dmi
index 93ed62314d3..675da21434a 100644
Binary files a/icons/obj/weapons.dmi and b/icons/obj/weapons.dmi differ