Good observation Tin,
Yes I noticed also another time recently had Travis C-17 into Dover and calling 2 different callsigns.
The only explanation I can think of is that 2 different crew members calling on same aircraft mixed up their own callsigns.
Pilot thinks he is one callsign and flight engineer or Load Master Sgt has another.
Those Travis crews need some more practice!
Well being from California I can see how they could screw up...
You know like knarly dude!
BTW watched good show on "Future weapons" today on Discovery channel recently filmed using AF CV-22 aircraft in Alberquerqe? New Mexico.
Wonder where the AF will station their V-22 Ospreys? Maybe Andrews gets a few?
OK web check shows Hurlbert Florida rescue/special ops aircraft for starters.
http://www.af.mil/photos/index.asp?galleryID=62
Mark