Marine Corps Air Station Iwakuni, Japan

U.S. Navy Engineman 3rd Class, Yajaira Armenta Navarro, with harbor operations, ties a boom to a john boat during a spill training exercise at Marine Corps Air Station Iwakuni, Japan, Jan. 27, 2017. The boom is used during spills to corral oil and fuel into controlled areas. The air station conducts an annual spill training exercise to evaluate response time, efficiency and to prepare for any spills that may occur. (U.S. Marine Corps photo by Lance Cpl. Joseph Abrego) - U.S. Navy Engineman 3rd Class, Yajaira Armenta Navarro, with harbor operations, ties a boom to a john boat during a spill training exercise at Marine Corps Air Station Iwakuni, Japan, Jan. 27, 2017. The boom is used during spills to corral oil and fuel into controlled areas. The air station conducts an annual spill training exercise to evaluate response time, efficiency and to prepare for any spills that may occur. (U.S. Marine Corps photo by Lance Cpl. Joseph Abrego)

U.S. Marine Cpl. Elizabeth Cisneros prepares an explosive device made of C-4 during improvised explosive device (IED) training on Target Island, Marine Corps Air Station Iwakuni, Japan, September 7, 2011. U.S. Marines trained hand-in-hand with EOD technicians on various explosive devices and hazardous material while also learning the dangers of each. (U.S. Marine Corps photo by Lance Cpl. Kassie L. McDole/Released) - U.S. Marine Cpl. Elizabeth Cisneros prepares an explosive device made of C-4 during improvised explosive device (IED) training on Target Island, Marine Corps Air Station Iwakuni, Japan, September 7, 2011. U.S. Marines trained hand-in-hand with EOD technicians on various explosive devices and hazardous material while also learning the dangers of each. (U.S. Marine Corps photo by Lance Cpl. Kassie L. McDole/Released)