A row of GFD Learjet 35A aircraft, including D-CGFG and D-CGFN, parked together on the airfield.

OU Aviation Festival at OUN.

Just hanging out near the hangers at OKC.

Landing at PHX

The C-21A is the military variant of the Learjet 35A, used largely for VIP transport and light cargo duties by the USAF.