PORT HUENEME, Calif. (June 29, 2021) Seabees from Naval Mobile Construction Battalion (NMCB) 18 install curbing to the side of a bridge as part of the final steps to its completion during Command Post Exercise (CPX). CPX is a training evolution conducted by Seabee battalions to assess their mission readiness exercise to prepare battalions for future operations. NMCB 18 Seabees are the expeditionary engineering and construction experts of the naval service by providing task-tailored, adaptable and combat-ready engineering and construction forces that deploy to support Navy objectives globally. (U.S. Navy photo by Mass Communication Specialist 1st Class Emily Reiner)