U.S. Air Force Gen. John E. Hyten, vice chairman of the Joint Chiefs of Staff, and SEAC Ramón "CZ" Colón-López, the senior enlisted advisor to the chairman to the Joint Chiefs of Staff, along with members and entertainers, watch a military working dog demonstration during the USO Summer Tour, July 1, 2021, at Joint Base San Antonio-Lackland, Texas. The USO brings shows to hundreds of thousands of American service members around the world. This is the first in-person event since the beginning of the COVID-19 pandemic impacted U.S. service members worldwide. (U.S. Air Force photo by Johnny Saldivar)