NAVAL AMPHIBIOUS BASE CORONADO, Calif. (Sept. 24, 2021) Chief Explosive Ordnance Disposal Technician James Koob explains an EOD tool created by additive manufacturing to Deputy Assistant Secretary of Defense for Readiness Kimberly Jackson during her visit to Explosive Ordnance Disposal Group (EODGRU) 1, at Naval Amphibious Base Coronado, Calif., Sept. 24, 2021. EODGRU-1 is a critical part of the Navy Expeditionary Combat Force that clears explosive hazards to provide access to denied areas, secures the undersea domain for freedom of maneuver, builds and fosters relationships with capable and trusted partners, and protects the homeland. (U.S. Navy photo by Lt. John J. Mike)