anchor.diff:  	var/frequency
   	var/shockedby = list()
   	var/datum/radio_frequency/radio_connection
  +	var/cur_command = null	//the command the door is currently attempting to complete
   
   obj/machinery/door/airlock/proc/can_radio()
   	if( !arePowerSystemsOn() || (stat & NOPOWER) || isWireCut(AIRLOCK_WIRE_AI_CONTROL) )
   		return 0
   	return 1
   
  +obj/machinery/door/airlock/process()
  +	..()
  +	execute_current_command()
   
   obj/machinery/door/airlock/receive_signal(datum/signal/signal)
   	if (!can_radio()) return
  
positive.code: 
  	if(id_tag != signal.data["tag"] || !signal.data["command"]) return
  
  	switch(signal.data["command"])
  		if("open")
  			open()
  
  
negative.code: 
  			lock()
  			sleep(2)
  	
  	send_status()
  
  obj/machinery/door/airlock/proc/command_completed(var/command)
  	switch(command)
  		if("open")
  			return (!density)
  
  		if("close")
  			return density
  
  		if("unlock")
  			return !locked
  
  		if("lock")
  			return locked
  
  		if("secure_open")
  			return (locked && !density)
  
  		if("secure_close")
  			return (locked && density)
  	
  	return 1	//Unknown command. Just assume it's completed.
  
  obj/machinery/door/airlock/proc/send_status()
  	if(radio_connection)
  