United States Army

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President Donald Trump, left, awards a Purple Heart to U.S. Army Sgt. First Class Alvaro Barrientos, with his wife Tammy Barrientos, right, at Walter Reed National Military Medical Center, Saturday, April 22, 2017, in Bethesda, Md. (AP Photo/Alex Brandon)

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President Donald Trump shakes hands with U.S. Army Sgt. First Class Alvaro Barrientos, after awarding him with a Purple Heart , as first lady Melania Trump, right, stands with Tammy Barrientos second from right, at Walter Reed National Military Medical Center, Saturday, April 22, 2017, in Bethesda, Md. (AP Photo/Alex Brandon)

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From left, Retired U.S. Major Gen. Antonio Taguba, Brig. Gen Brently White of the U.S. Army Reserves, and Philippine Consul General Henry Bensurto salute during a wreath laying ceremony for the 75th anniversary of the Bataan Death March at the Presidio's World War II West Coast Memorial Saturday, April 8, 2017, in San Francisco. On Saturday a dwindling band of veterans of the war were at the Presidio to honor the soldiers who died on the march and those who made it to a prisoner of war camp only to die there. They'll also commemorate the mostly Filipino soldiers who held off Japanese forces in the Philippines for three months without supplies of food or ammunition before a U.S. army major surrendered 75,000 troops to Japan on April 9, 1942. (AP Photo/Eric Risberg)

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This is a 1919 photo of Sgt. Alvin York (December 13, 1887 – September 2, 1964) of the U.S. Army in an unknown location. York received the Congressional Medal of Honor for killing 25 Germans, capturing 132 prisoners and putting 35 machine gun nests out of commission. York entered the Army as a Conscientious Objector. (AP Photo/Department of U.S. Army)

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The U.S. Army is experimenting with ways to resupply troops via mortar delivery systems. (U.S. Army) ** FILE **

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This undated photo released by the U.S. Army shows U.S. Army Pfc. Brian Odiorne, of Ware, Mass. The Pentagon said Tuesday, Feb. 21, 2017, that Odiorne died in Al Anbar Province, Iraq, but that his death was not combat related. He had been assigned to the 2nd Battalion, 82nd Field Artillery Regiment, 3rd Brigade Combat Team, 1st Cavalry Division, based at Fort Hood, Texas. (U.S. Army via AP)

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The U.S. Army showcases new soldiers from Alpha Company, 2nd Battalion,19th Infantry Regiment at Fort Benning, Georgia. (Facebook, U.S. Army Fort Benning)

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This image provided by the US Army shows Christopher Hoch. Kentucky State Police say in a statement it appears 35-year-old Jeremy Demar of Clarksville, Tennessee, was in a domestic dispute with his estranged wife, 32-year-old Priscilla Ann East, and found her at a home in Oak Grove, Kentucky, where he forced his way in Thursday night and fatally shot her and 28-year-old Hoch. (US Army via AP)

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FILE - In this image provided by the U.S. Army, then-Lt. Col. Victor Garcia walks during a change of command ceremony at Fort Bragg, N.C. Garcia, a 1990 West Point graduate and decorated officer who served in Afghanistan and Iraq, led U.S. Central Command’s information operations division from 2013 through July 2016. The division is the command’s epicenter for firing back at the Islamic State’s online propaganda machine. An AP investigation found it is plagued by incompetence, skewed data and cronyism. (Staff Sgt. Christopher Franklin/U.S. Army via AP)

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This undated photo provided by the U.S. Army shows Pvt. Chelsea Manning. (AP Photo/U.S. Army, File)

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Ernesto Garcia Lopez, Armament Research, Development and Engineering Center, Picatinny, New Jersey, comments on the successful testing of the U.S. Army's "hoverbike" on Jan. 13, 2017. (YouTube, U.S. Army Research Laboratory)

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FILE - In this undated file photo provided by the U.S. Army, Pfc. Chelsea Manning poses for a photo wearing a wig and lipstick. On Tuesday, Jan. 17, 2017, President Barack Obama commuted the sentence of Chelsea Manning, who leaked Army documents and is serving 35 years. (U.S. Army via AP, File)

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FILE - In this undated file photo provided by the U.S. Army, Pfc. Chelsea Manning poses for a photo wearing a wig and lipstick. On Tuesday, Jan. 17, 2017, President Barack Obama commuted the sentence of Chelsea Manning, who leaked Army documents and is serving 35 years. (U.S. Army via AP, File)