RkyFlight 
4K
404 (tail number visible)
US Air Force (not an airline, but an operator)
T-38
RIV/KRIV
Northrop T-38 Talon
Northrop T-38 Talon (USAF, Beale AFB 'BB' tail code) seen on the ramp, canopies open, under clear skies. This supersonic trainer remains a staple of military pilot training.