180224-N-ZC358-1099 EL CENTRO, Calif. (Feb. 24, 2018) The U.S. Navy flight demonstration squadron, the Blue Angels, fly in their signature Delta formation during a practice demonstration. The Blue Angels are scheduled to perform more than 60 demonstrations at more than 30 locations across the U.S. in 2018. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jess Gray/Released)