Trident Juncture Assault A Marine gives directions to a team member while securing a landing strip at Keflavik Air Base, Iceland, Oct. 17, 2018, during air assault training as part of Trident Juncture 18, a training exercise with NATO allies and partners. SHARE: Download: Full Size (1.81 MB) Tags: Marine Corps, Trident Juncture 18 Credit: Marine Corps Sgt. Devin Andrews VIRIN: 181017-M-XY415-134A.JPG Photo Gallery