Infrared Firing As seen through a night-vision device, Marines and sailors use infrared lasers to sight in on targets during a live-fire shoot aboard the USS Somerset in the U.S. 5th Fleet area of responsibility, Feb. 10, 2017. Marine Corps photo by Cpl. April Price SHARE: Download: Full Size (0.61 MB) Tags: Marines, Sailors, training, Featured Photos, Navy, Marine Corps Credit: Cpl. April Price VIRIN: 170210-M-JH782-405Z.JPG Photo Gallery