Seabees assigned to Naval Mobile Construction Battalion (NMCB) 1 place concrete at a project aboard Naval Base Guam, Oct. 20, 2015. NMCB 1 provides expeditionary construction and engineering (combat service support), whichincludes horizontal and vertical construction, operation and maintenance of expeditionary bases and facilities, tactical sustainment bridging, humanitarian assistance (HA) through Construction Civic Action Details (CCAD) and Civic Action Teams (CAT), and theater disaster response capabilities. NMCB 1 is assigned to Commander Task Force (CTF) 75, the primary expeditionary task force responsible for the planning and execution of coastal riverine operations, explosive ordnance disposal, diving engineering, and underwater construction in the U.S. 7th fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 1st Class Ace Rheaume/151020-N-SI773-242) Builder 3rd Class Joshua Donahue, assigned toNMCB 1, places concrete at a projectaboard Naval Base Guam Oct. 20, 2015. (U.S. Navy photo by Mass Communication Specialist 1st Class Ace Rheaume/151020-N-SI773-078) Builder 3rd Class Mallory Getty, assigned toNMCB 1, uses a magnesium float to smooth concrete during a concrete placement project aboard Naval Base Guam, Oct. 20, 2015. (U.S. Navy photo by Mass Communication Specialist 1st Class Ace Rheaume/151020-N-SI773-223)