U.S. Army Sgt. Sania Leuelu, squad leader for 1st Squad, 1st Platoon, Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, treks through high brush during a squad live-fire exercise Nov. 18, 2016, at Andersen Air Force Base, Guam. The exercise assesses a squad’s ability to navigate, communicate and apply tactical and infantrymen skills to seize a bunker. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)

A blast shines as U.S. Army Soldiers from Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, destroy a bunker with a simulated grenade during a squad live-fire exercise Nov. 18, 2016 at Andersen Air Force Base, Guam. After executing their objective during daylight hours, squads repeated the scenario using infrared lasers to mark their targets in the dark to gain experience working in low-light situations. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)

U.S. Army Sgt. Sania Leuelu, squad leader for 1st Squad, 1st Platoon, Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, directs the fire of his team during a squad live-fire exercise Nov. 18, 2016, at Andersen Air Force Base, Guam. Effective communication between teams is crucial to the safe execution of live-fire training. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)

U.S. Army Sgt. Andre Ried, left, and U.S. Army Pfc. Steven Duron, both from the 1st Squad, 1st Platoon, Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, flank a bunker during a squad live-fire exercise Nov. 18, 2016, at Andersen Air Force Base, Guam. The small team flanked a bunker, from a blind spot, as the rest of the squad suppressed simulated targets. Soldiers are assessed quarterly on their ability to navigate, communicate, and apply tactical and infantrymen skills. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)

A U.S. Army squad from Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division eliminates simulated targets during a night time squad live-fire exercise Nov. 18, 2016, at Andersen Air Force Base, Guam. After executing their objective during daylight hours, squads repeated the scenario using infrared lasers to mark their targets in the dark to gain experience working in low-light situations. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)

U.S. Army Sgt. Sania Leuelu, squad leader for 1st Squad, 1st Platoon, Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, treks through high brush during a squad live-fire exercise Nov. 18, 2016, at Andersen Air Force Base, Guam. The exercise assesses a squad’s ability to navigate, communicate and apply tactical and infantrymen skills to seize a bunker. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)

U.S. Army Sgt. Shane Fay, team leader for 1st Squad, 1st Platoon, Alpha Company, 4th Battalion, 23rd Infantry Regiment, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, secures a wooded area during a squad live-fire exercise Nov. 18, 2016, at Andersen Air Force Base, Guam. Soldiers fired blanks at opposing forces, followed by live-fire at simulated targets during daylight and at night. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)