Argentinian air force Chief of Staff Gen. Fernando Luis Mengo shakes hands with U.S. Air Force Chief of Staff Gen. David Allvin during the 64th Conference of the American Air Chiefs meeting in San Carlos de Bariloche, Argentina, June 19, 2024. Senior air force leaders and representatives spanning 19 nations took part in discussions concentrated on the collective readiness needs of the Western Hemisphere in order to meet shared visions and lay plans for future exercises. (U.S. Air Force photo by Tech. Sgt. Rachel Maxwell)