U.S. Navy Petty Officer 3rd Class Timothy Pryor, a hospital corpsman with the 31st Marine Expeditionary Unit, demonstrates proper tourniquet use during a Combat Lifesaver Course aboard the amphibious assault ship USS Bonhomme Richard (LHD 6) Oct. 22, 2016. Marines taking the course learn basic lifesaving skills to respond to critical situations. (U.S. Marine Corps photo by Cpl. Samantha Villarreal) - U.S. Navy Petty Officer 3rd Class Timothy Pryor, a hospital corpsman with the 31st Marine Expeditionary Unit, demonstrates proper tourniquet use during a Combat Lifesaver Course aboard the amphibious assault ship USS Bonhomme Richard (LHD 6) Oct. 22, 2016. Marines taking the course learn basic lifesaving skills to respond to critical situations. (U.S. Marine Corps photo by Cpl. Samantha Villarreal)

U.S. Marine Corps MV-22B Osprey tiltrotor aircraft belonging to Marine Medium Tiltrotor Squadron 262 (Reinforced), 31st Marine Expeditionary Unit, take off from Col. Ernesto Ravina Air Base, Philippines, after delivering a group of Marines participating in Philippine Amphibious Landing Exercise 33 (PHIBLEX), Oct. 5, 2016. PHIBLEX is an annual U.S.-Philippine military bilateral exercise that combines amphibious capabilities and live-fire training with humanitarian civic assistance efforts to strengthen interoperability and build up partner capabilities. (U.S. Marine Corps Photo by Staff Sgt. T.T. Parish/Released) - U.S. Marine Corps MV-22B Osprey tiltrotor aircraft belonging to Marine Medium Tiltrotor Squadron 262 (Reinforced), 31st Marine Expeditionary Unit, take off from Col. Ernesto Ravina Air Base, Philippines, after delivering a group of Marines participating in Philippine Amphibious Landing Exercise 33 (PHIBLEX), Oct. 5, 2016. PHIBLEX is an annual U.S.-Philippine military bilateral exercise that combines amphibious capabilities and live-fire training with humanitarian civic assistance efforts to strengthen interoperability and build up partner capabilities. (U.S. Marine Corps Photo by Staff Sgt. T.T. Parish/Released)

U.S. Marine Lance Cpl. Maresea Potts, a supply clerk with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, plays a game of Duck-Duck-Goose with Maruglo Elementary School students during a visit to the school on Col. Ernesto Ravina Air Base, Philippines, Oct. 6, 2016. Marines and Sailors with the 31st MEU visited the school to build unity between U.S. forces and the local residents during Philippine Amphibious Landing Exercise 33 (PHIBLEX). PHIBLEX is an annual U.S.-Philippine military bilateral exercise that combines amphibious capabilities and live-fire training with humanitarian civic assistance efforts to strengthen interoperability and working relationships. (U.S. Marine Corps Photo by Staff Sgt. T.T. Parish/Released) - U.S. Marine Lance Cpl. Maresea Potts, a supply clerk with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, plays a game of Duck-Duck-Goose with Maruglo Elementary School students during a visit to the school on Col. Ernesto Ravina Air Base, Philippines, Oct. 6, 2016. Marines and Sailors with the 31st MEU visited the school to build unity between U.S. forces and the local residents during Philippine Amphibious Landing Exercise 33 (PHIBLEX). PHIBLEX is an annual U.S.-Philippine military bilateral exercise that combines amphibious capabilities and live-fire training with humanitarian civic assistance efforts to strengthen interoperability and working relationships. (U.S. Marine Corps Photo by Staff Sgt. T.T. Parish/Released)