U.S. Marines with 1st Battalion, 8th Marine Regiment and 2nd Battalion, 8th Marine Regiment stand in formation with Romanian soldiers during the Black Sea Rotational Force transfer of authority on Mihal Kogalniceanu Air Base, Romania, Aug . 1, 2016. After six months, eight major exercises and more than 40 military-to-military engagements with 15 partner nations the Marines of 2/8, rotation 16.2, relived 1/8,rotation 16.1. (U.S. Marine Corps photo by Lance Cpl. Timothy J. Lutz) - U.S. Marines with 1st Battalion, 8th Marine Regiment and 2nd Battalion, 8th Marine Regiment stand in formation with Romanian soldiers during the Black Sea Rotational Force transfer of authority on Mihal Kogalniceanu Air Base, Romania, Aug . 1, 2016. After six months, eight major exercises and more than 40 military-to-military engagements with 15 partner nations the Marines of 2/8, rotation 16.2, relived 1/8,rotation 16.1. (U.S. Marine Corps photo by Lance Cpl. Timothy J. Lutz)

Staff Sgt. Nicholas R. Bowling, a joint terminal attack controller with 2nd Battalion, 8th Marine Regiment, observes targets down range during a fire support coordination exercise at Camp Lejeune, N.C., March 15, 2016. The exercise was the first to allow the unit to collaborate with their 1st Battalion, 10th Marine Regiment attachment that will be among them during their upcoming deployment. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - Staff Sgt. Nicholas R. Bowling, a joint terminal attack controller with 2nd Battalion, 8th Marine Regiment, observes targets down range during a fire support coordination exercise at Camp Lejeune, N.C., March 15, 2016. The exercise was the first to allow the unit to collaborate with their 1st Battalion, 10th Marine Regiment attachment that will be among them during their upcoming deployment. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)