151018-N-SD965-161 CHINCHILLA, Spain (Oct. 18, 2015) U.S. Navy Seabees assigned to Naval Mobile Construction Battalion (NMCB) 1 construct three training structures in support of exercise Trident Juncture 2015 at Chinchilla, Spain, Oct. 16, 2015. NMCB 1 constructed training structures to provide a realistic training environment for participating forces to use during exercise Trident Juncture. 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/Released)