Pima Air and Space Museum An Army VH-34C Choctaw helicopter used in the presidential fleet is on display at the Pima Air and Space Museum in Tucson, Ariz. The Choctaw was used for presidential helicopter transport until 1964, when that service transferred to the Marine Corps. SHARE: Download: Full Size (1.62 MB) Tags: history, pima air and space museum Credit: David Vergun, DOD VIRIN: 250214-D-UB488-025.JPG Photo Gallery