anchor.diff:  #define AIRLOCK_DAMAGE_DEFLECTION_N  21  // Normal airlock damage deflection
   #define AIRLOCK_DAMAGE_DEFLECTION_R  30  // Reinforced airlock damage deflection
   
  +#define DOOR_CLOSE_WAIT 60 /// Time before a door closes, if not overridden
   /obj/machinery/door/airlock
   	name = "airlock"
   	icon = 'icons/obj/doors/airlocks/station/public.dmi'
  
positive.code: #undef AIRLOCK_INTEGRITY_MULTIPLIER
  #undef AIRLOCK_DAMAGE_DEFLECTION_N
  #undef AIRLOCK_DAMAGE_DEFLECTION_R
  
negative.code: 	if(safe)
  		for(var/atom/movable/M in get_turf(src))
  			if(M.density && M != src) //something is blocking the door
  				autoclose_in(DOOR_CLOSE_WAIT)
  				return
  
  	if(forced < 2)
  