diff --git a/code/WorkInProgress/kilakk/fax.dm b/code/WorkInProgress/kilakk/fax.dm
index 76bcc0baa4..0d8f4cdde1 100644
--- a/code/WorkInProgress/kilakk/fax.dm
+++ b/code/WorkInProgress/kilakk/fax.dm
@@ -109,10 +109,13 @@ var/list/alldepartments = list("Central Command")
 
 	if(href_list["remove"])
 		if(tofax)
-			tofax.loc = usr.loc
-			usr.put_in_hands(tofax)
-			usr << "<span class='notice'>You take the paper out of \the [src].</span>"
-			tofax = null
+			if(!ishuman(usr))
+				usr << "<span class='warning'>You can't do it.</span>"
+			else
+				tofax.loc = usr.loc
+				usr.put_in_hands(tofax)
+				usr << "<span class='notice'>You take the paper out of \the [src].</span>"
+				tofax = null
 
 	if(href_list["scan"])
 		if (scan)
diff --git a/code/_onclick/hud/screen_objects.dm b/code/_onclick/hud/screen_objects.dm
index 4ca8f9f5d7..ed054ae6c8 100644
--- a/code/_onclick/hud/screen_objects.dm
+++ b/code/_onclick/hud/screen_objects.dm
@@ -276,37 +276,79 @@
 							C << "<span class='notice'>You are not wearing a mask.</span>"
 							return 1
 						else
-							if(istype(C.l_hand, /obj/item/weapon/tank))
-								C << "<span class='notice'>You are now running on internals from the [C.l_hand] on your left hand.</span>"
-								C.internal = C.l_hand
-							else if(istype(C.r_hand, /obj/item/weapon/tank))
-								C << "<span class='notice'>You are now running on internals from the [C.r_hand] on your right hand.</span>"
-								C.internal = C.r_hand
-							else if(ishuman(C))
+							var/list/nicename = null
+							var/list/tankcheck = null
+							var/breathes = "oxygen"    //default, we'll check later
+							var/list/contents = list()							
+
+							if(ishuman(C))
 								var/mob/living/carbon/human/H = C
-								if(istype(H.s_store, /obj/item/weapon/tank))
-									H << "<span class='notice'>You are now running on internals from the [H.s_store] on your [H.wear_suit].</span>"
-									H.internal = H.s_store
-								else if(istype(H.belt, /obj/item/weapon/tank))
-									H << "<span class='notice'>You are now running on internals from the [H.belt] on your belt.</span>"
-									H.internal = H.belt
-								else if(istype(H.l_store, /obj/item/weapon/tank))
-									H << "<span class='notice'>You are now running on internals from the [H.l_store] in your left pocket.</span>"
-									H.internal = H.l_store
-								else if(istype(H.r_store, /obj/item/weapon/tank))
-									H << "<span class='notice'>You are now running on internals from the [H.r_store] in your right pocket.</span>"
-									H.internal = H.r_store
+								breathes = H.species.breath_type
+								nicename = list ("suit", "back", "belt", "right hand", "left hand", "left pocket", "right pocket")
+								tankcheck = list (H.s_store, C.back, H.belt, C.r_hand, C.l_hand, H.l_store, H.r_store)
 
-							//Seperate so CO2 jetpacks are a little less cumbersome.
-							if(!C.internal && istype(C.back, /obj/item/weapon/tank))
-								C << "<span class='notice'>You are now running on internals from the [C.back] on your back.</span>"
-								C.internal = C.back
+							else    
 
+								nicename = list("Right Hand", "Left Hand", "Back")
+								tankcheck = list(C.r_hand, C.l_hand, C.back)
+
+							for(var/i=1, i<tankcheck.len+1, ++i)
+								if(istype(tankcheck[i], /obj/item/weapon/tank))
+									var/obj/item/weapon/tank/t = tankcheck[i]
+									if (!isnull(t.manipulated_by) && t.manipulated_by != C.real_name && findtext(t.desc,breathes))
+										contents.Add(t.air_contents.total_moles)	//Someone messed with the tank and put unknown gasses
+										continue					//in it, so we're going to believe the tank is what it says it is
+									switch(breathes)					
+																		//These tanks we're sure of their contents
+										if("nitrogen") 							//So we're a bit more picky about them.
+											
+											if(t.air_contents.nitrogen && !t.air_contents.oxygen)
+												contents.Add(t.air_contents.nitrogen)
+											else
+												contents.Add(0)	
+
+										if ("oxygen")
+											if(t.air_contents.oxygen && !t.air_contents.toxins) 
+												contents.Add(t.air_contents.oxygen)
+											else
+												contents.Add(0)
+
+										// No races breath this, but never know about downstream servers.
+										if ("carbon dioxide")
+											if(t.air_contents.carbon_dioxide && !t.air_contents.toxins)
+												contents.Add(t.air_contents.carbon_dioxide)
+											else
+												contents.Add(0)
+										
+	
+								else									
+									//no tank so we set contents to 0
+									contents.Add(0)
+
+							//Alright now we know the contents of the tanks so we have to pick the best one.
+
+							var/best = 0
+							var/bestcontents = 0
+							for(var/i=1, i <  contents.len + 1 , ++i)
+								if(!contents[i])
+									continue	
+								if(contents[i] > bestcontents)
+									best = i
+									bestcontents = contents[i]
+							
+							
+							//We've determined the best container now we set it as our internals
+
+							if(best)
+								C << "<span class='notice'>You are now running on internals from [tankcheck[best]] on your [nicename[best]].</span>"
+								C.internal = tankcheck[best]
+							
+								
 							if(C.internal)
 								if(C.internals)
 									C.internals.icon_state = "internal1"
 							else
-								C << "<span class='notice'>You don't have an oxygen tank.</span>"
+								C << "<span class='notice'>You don't have a[breathes=="oxygen" ? "n oxygen" : addtext(" ",breathes)] tank.</span>"
 		if("act_intent")
 			usr.a_intent_change("right")
 		if("help")
diff --git a/code/game/machinery/atmoalter/canister.dm b/code/game/machinery/atmoalter/canister.dm
index 1d5f210dd3..d8b8521150 100644
--- a/code/game/machinery/atmoalter/canister.dm
+++ b/code/game/machinery/atmoalter/canister.dm
@@ -255,6 +255,8 @@ Release Pressure: <A href='?src=\ref[src];pressure_adj=-1000'>-</A> <A href='?sr
 
 		if (href_list["remove_tank"])
 			if(holding)
+				if(istype(holding, /obj/item/weapon/tank))
+					holding.manipulated_by = usr.real_name
 				holding.loc = loc
 				holding = null
 
diff --git a/code/game/objects/items/devices/PDA/PDA.dm b/code/game/objects/items/devices/PDA/PDA.dm
index 9123617f2a..2750af1b05 100755
--- a/code/game/objects/items/devices/PDA/PDA.dm
+++ b/code/game/objects/items/devices/PDA/PDA.dm
@@ -1042,6 +1042,9 @@ var/global/list/obj/item/device/pda/PDAs = list()
 
 		if(5)
 			if((istype(A, /obj/item/weapon/tank)) || (istype(A, /obj/machinery/portable_atmospherics)))
+				if(istype(A, /obj/item/weapon/tank))
+					var/obj/item/weapon/tank/t = A
+					t.manipulated_by = user.real_name
 				var/obj/icon = A
 				for (var/mob/O in viewers(user, null))
 					O << "\red [user] has used [src] on \icon[icon] [A]"
diff --git a/code/game/objects/items/weapons/tanks/tanks.dm b/code/game/objects/items/weapons/tanks/tanks.dm
index 143ff13a04..e0e30e60cb 100644
--- a/code/game/objects/items/weapons/tanks/tanks.dm
+++ b/code/game/objects/items/weapons/tanks/tanks.dm
@@ -15,7 +15,8 @@
 	var/distribute_pressure = ONE_ATMOSPHERE
 	var/integrity = 3
 	var/volume = 70
-
+	var/manipulated_by = null		//Used by _onclick/hud/screen_objects.dm internals to determine if someone has messed with our tank or not.
+						//If they have and we haven't scanned it with the PDA or gas analyzer then we might just breath whatever they put in it.
 /obj/item/weapon/tank/New()
 	..()
 
@@ -86,7 +87,7 @@
 			O << "\red [user] has used [W] on \icon[icon] [src]"
 
 		var/pressure = air_contents.return_pressure()
-
+		manipulated_by = user.real_name			//This person is aware of the contents of the tank.
 		var/total_moles = air_contents.total_moles()
 
 		user << "\blue Results of analysis of \icon[icon]"
@@ -261,4 +262,4 @@
 			integrity--
 
 	else if(integrity < 3)
-		integrity++
\ No newline at end of file
+		integrity++
diff --git a/code/game/objects/structures/tables_racks.dm b/code/game/objects/structures/tables_racks.dm
index 16c5be21a8..e5dc20b3e1 100644
--- a/code/game/objects/structures/tables_racks.dm
+++ b/code/game/objects/structures/tables_racks.dm
@@ -423,6 +423,8 @@
 	set desc = "Flips a non-reinforced table"
 	set category = "Object"
 	set src in oview(1)
+	if(ismouse(usr))
+		return
 	if (!can_touch(usr))
 		return
 	if(!flip(get_cardinal_dir(usr,src)))
diff --git a/code/modules/admin/admin_investigate.dm b/code/modules/admin/admin_investigate.dm
index a062788438..1c90383f40 100644
--- a/code/modules/admin/admin_investigate.dm
+++ b/code/modules/admin/admin_investigate.dm
@@ -26,12 +26,12 @@
 	F << "<small>[time2text(world.timeofday,"hh:mm")] \ref[src] ([x],[y],[z])</small> || [src] [message]<br>"
 
 //ADMINVERBS
-/client/proc/investigate_show( subject in list("hrefs","notes","singulo") )
+/client/proc/investigate_show( subject in list("hrefs","notes","singulo","telesci") )
 	set name = "Investigate"
 	set category = "Admin"
 	if(!holder)	return
 	switch(subject)
-		if("singulo")			//general one-round-only stuff
+		if("singulo", "telesci")			//general one-round-only stuff
 			var/F = investigate_subject2file(subject)
 			if(!F)
 				src << "<font color='red'>Error: admin_investigate: [INVESTIGATE_DIR][subject] is an invalid path or cannot be accessed.</font>"
diff --git a/code/modules/organs/organ_external.dm b/code/modules/organs/organ_external.dm
index 3bd5348318..53633d5db0 100644
--- a/code/modules/organs/organ_external.dm
+++ b/code/modules/organs/organ_external.dm
@@ -875,8 +875,8 @@ obj/item/weapon/organ/head/New(loc, mob/living/carbon/human/H)
 
 	H.regenerate_icons()
 
-	H.stat = 2
-	H.death()
+	brainmob.stat = 2
+	brainmob.death()
 
 obj/item/weapon/organ/head/proc/transfer_identity(var/mob/living/carbon/human/H)//Same deal as the regular brain proc. Used for human-->head
 	brainmob = new(src)