A B-1B Lancer from the 77th Weapons Squadron, Dyess Air Force Base, Texas, takes off for a US Air Force Weapons School training exercise June 8, 2017 at Nellis AFB, Nev. Carrying the largest conventional payload of both guided and unguided weapons in the Air Force inventory, the multi-mission B-1 is the backbone of America's long-range bomber force. (U.S Air Force photo by Senior Airman Joshua Kleinholz)