To clarify Sentry Agitator
If any Mil site looses IFF ie Mode 3/3c from its aircraft or the ability to decode then they would have to apply the full service along with its limitations. So If the Controller couldn't see any IFF and was in Controlled airspace then 5/10 miles or co-ordination based on pilots reported height (if they could see other Mode3/3c). If the aircraft looses its Mode 3/3c then as long as all other units are aware and co-ordination if required is done then he could in accordance with the rules stay in controlled airspace. Civil controllers would expect Mil to call them for co-ordination, so any Mil controller would with no IFF displayed to them (would if able) get into airspace that would allow them to give RIS/RAS/FIS ASAP.