Colombian Air Force Technician 3rd Class Nestor Vanegas marshals an A-29B Super Tucano for take-off during exercise Green Flag East at Barksdale Air Force Base, La., on August 17th, 2016. Tech. Vanegas performed pre-flight checks on the aircraft and gave pilots the go-ahead signal for take-off. (U.S. Air Force photo / Senior Airman Mozer O. Da Cunha)
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