U.S. Air Force Staff Sgt. Anthony Zygmunt, 7th Reconnaissance Squadron alarm monitor, navigates land during Air Combat Command’s Defender Challenge team selection at Joint Base Langley-Eustis, Virginia, Aug. 23, 2018. The team candidates were tasked with finding three points during the land navigation portion. (U.S. Air Force photo by Staff Sgt. Areca T. Bell)