It may be different here in California. I'm told that before I can take
the 91 ride I need some other things including...
1) General Emergency Serivices training
2) Spotter certification (lots of classes and in flight training)
3) UDF operator (to locate ELTs) (again lots of classes and hands on
training)
4) Pilot tech. certificate

I'm also told that Nomex is 100% required for all missions. I guess we
had a CAP flight go down a while back and some guys burned. Of course,
just like anything else you can wear either the AF Nomex or the CAP
Nomex. CAP is blue, AF is olive, both feel great when its 110F outside
For orientation rides you can wear any AF or CAP uniform, including
(this is recent) the gold shirt.

-Robert