151020-N-SD965-292 SETUBAL, Portugal (Oct. 20, 2015) U.S. Navy Seabees measure and cut wood during a Naval Mobile Construction Battalion (NMCB) 1 construction project to install doors in a training structure in Setubal, Portugal, Oct. 20, 2015. NMCB 1 constructed training structures to provide a realistic training environment for the U.S. Special Operations Command Europe to use during exercise Trident Juncture scenarios. Trident Juncture is the largest NATO Exercise to be conducted in the past 20 years with around 36,000 troops from more than 30 nations, to include both NATO Allies and Partners. (U.S. Navy photo by Mass Communication Specialist 1st Class Brannon Deugan/Not Released)