170505-N-IR734-139 BARKSDALE, La. (May. 5, 2017) Yeoman 1st Class Derrick Demery and Aviation Electrician's Mate 1st Class Brian Coffman perform a final check of a jet during morning turns at the Defenders of Liberty Air Show. The Blue Angels are scheduled to perform more than 60 demonstrations across the U.S. in 2017. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ian Cotter/Released)