The 339th Flight Test Squadron is a United States Air Force unit primarily based at Eglin Air Force Base, Florida. It plays a crucial role in the development, test, and evaluation of various air force weapons systems. This squadron operates under the 46th Test Wing, providing essential support to ensure the readiness and effectiveness of U.S. Air Force platforms. The 339th FTS is part of the broader Air Force Materiel Command, a critical organization that oversees research, development, testing, engineering, and logistics for the U.S. Air Force. The squadron’s mission involves conducting flight tests, analyzing data, and making recommendations to improve the performance, safety, and functionality of aircraft systems.