A North American F-51D Mustang, likely modified with a second seat for training duty, sits heavily loaded with practice or live ordnance on a snow-covered ramp. Surplus P-51 Mustangs remained in USAF and Air National Guard service well into the 1950s as fighter-bombers, valued for their range, reliability, and ability to carry a substantial bomb load in the close air support role. Project: 218215