403 Britain's "Safety Curtain" ... YOU can help put it up Peace may well depend on there being a Radar safety curtain in the skies surrounding Britain. You can help put it up by joining a Fighter Control Fun of the Royal Auxiliary Air Force. livery Fighter Control Unit is manned by a large proportion of part-time volunteers. There is no more interesting way of spending your spare time. You work with the latest radar and radio aids, in company with people (many of them ex-airmen and airwomen) proud to be entrusted with so vital a task.