171008-N-AF263-172 SAN FRANCISCO (Oct. 8, 2017) Cmdr. Jeffrey Plummer, command chaplain assigned to the Wasp-class amphibious assault ship USS Essex (LHD 2), delivers a sermon at Old First Presbyterian Church during Fleet Week San Francisco 2017. Fleet weeks provide an opportunity for the American public to meet their Navy, Marine Corps and Coast Guard team and experience America's sea services. Fleet Week San Francisco will highlight naval personnel, equipment, technology and capabilities with an emphasis on humanitarian assistance and disaster response. (U.S. Navy photo by Mass Communication Specialist Seaman Sabyn L. Marrs/Released)