There's another interesting thread in PPRuNe about the merits of the RAF Regiment and a few are saying how the Army couldn't do the job because of their basic lack of aviation awareness.
Seems very similar to a point the Navy is making about how the RAF don't have the basic seamanship knowledge to make JCA single service.
This raises two points:
1. How come the same essential argument can be valid for the RAF but not the Navy?
and...
2. How hard do we think the RAF would fight if the Army tried to take over defence of Air Force equipment the way the Air Force is trying to take over Naval Aviation?