U.S. Air Force Staff. Sgt. Matt Keenan, 312th Training Squadron instructor, directs traffic during the Showdown in San Angelo Super Nationals drag boat race at Lake Nasworthy, San Angelo, Texas, June 25, 2016. The San Angelo Chamber of Commerce runs the event with the help of Goodfellow Air Force Base volunteers. (U.S. Air Force photo by Airman 1st Class Randall Moose/Released)