Awesome CHECK 6,thanks a lot.I believe it might have been an Air Force C40 then,there was a C-17 accompanying it on frequency and i think they both had "reach" callsigns.i never knew the USAF had C40s thats why i guessed it must be Navy,though i just checked earlier this evening and saw they have recently got the C40B with winglets.
Anyway,thanks for the info,and from a Civillian plane driver,i'd like to compliment all US military aviators on the great ambassadors they are for aviation.i've met lots of ANG guys and a few Navy and Marines pilots down here in SA and they're a great bunch.
Cheers,Cb.