The C-5M is a strategic transport aircraft and is the largest aircraft in the Air Force inventory. It’s nearly 25 percent larger than the next biggest aircraft in the Air Force. The primary mission of the aircraft is to transport cargo and personnel. The first operational C-5 was delivered to the Air Force in June 1970. It flew its first mission on July 9, 1970 during the Vietnam War. The C-5 traveling to Dayton is from the 60th Air Mobility Wing based at Travis Air Force Base in California.