Commander Chad Underwood is a former U.S. naval flight officer and Weapon Systems Officer (WSO) known for having captured footage depicting a purported UAP incident involving U.S. Navy Carrier Strike Group 11 (CSG-11) in 2004. Underwood, who held the rank of Lieutenant at the time of the encounter, has since stated in interviews that he was the originator of the “Tic Tac” nickname popularly associated with the UAP in the video. The short piece of footage, often referred to as “Flir1” or simply “Flir”, is one of three videos authorized for release by the Department of Defense in April 2020 depicting objects it characterized as “unidentified”.