 Complete the following phrase:  His participation in the Air Force Art Program allowed Ferris to travel worldwide and to document the missions of many of the Air Forces jet aircraft, providing 62 major paintings to the collection. The program provided opportunities to fly in a wide variety of Air Force planes over more than 40 years, including in B-52s, the F-4E Phantom in Thailand, with the United States Air Force Thunderbirds flight demonstration team, and on Air Force missions during the 