171006-N-JO908-313 SAN FRANCISCO (Oct. 6, 2017) The U.S. Navy flight demonstration squadron, the Blue Angels, perform during Fleet Week San Francisco 2017. Fleet Week offers the public an opportunity to meet Sailors, Marines, and members of the Coast Guard, and gain a better understanding of how sea services support the national defense of the United States and freedom of the seas. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kory Alsberry/Released)