Atwater CA Castle Air Museum C123K (#0016)

C123K Provider, a transport aircraft introduced in 1956 and retired from the Air Force in 1980. The markings over the door suggest that this one was used for parachuting in troops and cargo. Somehow I don't think "Hog Hauler" refers to hauling hogs of the 4-legged variety. en.wikipedia.org/wiki/Fairchild_C-123_Provider