marine corps

In this aerial photo, Japan's Coast Guard ship is seen at sea during a search operation for U.S. Marine refueling plane and fighter jet off Muroto, Kochi prefecture, southwestern Japan, Thursday, Dec. 6. A Marine refueling plane and a fighter jet crashed into the Pacific Ocean off Japan's southwestern coast after a midair collision early Thursday, and rescuers found one of the seven crew members in stable condition while searching for the others, officials said. The U.S. Marine Corps said that the 2 a.m. crash involved an F/A-18 fighter jet and a KC-130 refueling aircraft during regular training after the planes took off from their base in Iwakuni, near Hiroshima in western Japan. (Kyodo News via AP)

One of the 20 female soldiers, center, who is among the 400 students who qualified to start Ranger School, runs in place in between obstacles on the Darby Queen, one of the toughest obstacle courses in U.S. Army training, at Fort Benning, in Ga. (Robin Trimarchi/Ledger-Enquirer via AP, File)

Army 1st Lt. Shaye Haver and Capt. Kristen Griest pose for photos with other female West Point alumni after an Army Ranger school graduation ceremony at Fort Benning, Ga. There are increasing rumblings about whether women should now be required to register for the draft if they can indeed serve in all areas of the military. (Associated Press)

Army Chief of Staff Gen. Mark Milley testifies on Capitol Hill in Washington, Tuesday, Feb. 2, 2016, before the Senate Armed Services Committee hearing to examine the implementation of the decision to open all ground combat units to women. (Associated Press)

U.S. Marines walk on the beach at Waimea Bay near Haleiwa, Hawaii, where two military helicopters crashed into the ocean about 2 miles offshore, Friday, Jan. 15, 2016. The helicopters carrying 12 crew members collided off the Hawaiian island of Oahu during a nighttime training mission, and rescuers are searching a debris field in choppy waters Friday, military officials said. (Associated Press)

Defense Secretary Ash Carter gestures during a news conference at the Pentagon, Thursday, Dec. 3, 2015, where he announced that he has ordered the military to open all combat jobs to women, and is giving the armed services until Jan. 1 to submit plans to make the historic change. (Associated Press)