181002-N-AZ808-1130 SAN FRANCISCO (Oct. 2, 2018) Sailors and Marines practice concrete breaching techniques during the annual Defense Support of Civil Authorities (DSCA) exercise during San Francisco Fleet Week 2018. San Francisco Fleet Week is an opportunity for the American public to meet their Navy, Marine Corps and Coast Guard teams and experience America's sea services. During fleet week, service members participate in various community service events, showcase capabilities and equipment to the community, and enjoy the hospitality of San Francisco and its surrounding areas. (U.S. Navy photo by Mass Communication Specialist 3rd Class Nicholas Burgains/Released)