The 505 Test and Training Group ACC (Air Combat Command) is a United States Air Force unit responsible for testing, developing, and integrating weapons systems and tactics used by the U.S. Air Force’s fighter aircraft. Based at Nellis Air Force Base in Nevada, this group falls under the Air Combat Command (ACC), which oversees all USAF combat-related activities worldwide. The 505 TTG ACC contributes to maintaining the readiness and capabilities of U.S. Air Force fighters through extensive testing, evaluation, and training exercises, ensuring their effectiveness in various operational scenarios.