Defense Secretary Ash Carter pins the Department of Defense for Distinguished Public Service on President Barack Obama during an Armed Forces Full Honor Farewell Review for the president, Wednesday, Jan. 4, 2017, at Conmy Hall, Joint Base Myer-Henderson Hall, Va. (AP Photo/Alex Brandon)
In this photo provided by the Defense Department, taken Oct. 23, 2016, Defense Secretary Ash Carter listens as U.S. Army Lt. Gen. Stephen Townsend, commander of Combined Joint Task Force-Operation Inherent Resolve, speaks during a news conference in Erbil, Iraq. Townsend, the commander of the U.S.-led coalition against the Islamic State group says there’s an urgent need to encircle the extremists’ stronghold in the Syrian city of Raqqa because of intelligence warnings that attacks on Western targets are being plotted there. (U.S. Air Force Tech. Sgt. Brigitte N. Brantley/DoD via AP)
This undated photo provided by the Department of Defense shows Army Sgt. Douglas J. Riney, of Fairview, Ill. Riney died Thursday, Oct. 20, 2016, in Kabul, Afghanistan of wounds received from encountering hostile enemy forces, the Defense Department said. (Department of Defense via AP)
Hon. mention in the Pictorial category: Three military students assigned to the 312th Training Squadron battle a fire during a liquid fire scenario at the Louis F. Garland Department of Defense Fire Academy, Oct. 19, 2015. During liquid fire training, the students rotate through three-man iterations of low and high fires while moving through water. The joint DOD school is comprised of Air Force, Army, Navy, Marine and civil service students. IMAGE: STAFF SGT. VERNON YOUNG JR., USAF
The U.S. Air Force proposed the MQ-9 Reaper system in response to the Department of Defense directive to support initiatives of overseas contingency operations. It is larger and more powerful than the MQ-1 Predator, and is designed to execute time-sensitive targets with persistence and precision, and destroy or disable those targets. The "M" is the DOD designation for multi-role, and "Q" means remotely piloted aircraft system. The "9" indicates it is the ninth in the series of remotely piloted aircraft systems.
The Mount Soledad Memorial Association, the veterans group that maintains the memorial, announced Monday that it has purchased the half-acre of federal land on which the 29-foot Latin cross stands from the Defense Department for $1.4 million. (Associated Press)
"The Defense Department's current regulations regarding transgender service members are outdated and are causing uncertainty that distracts commanders from our core missions," said Defense Secretary Ashton Carter. "We have transgender soldiers, sailors, airmen, and Marines — real, patriotic Americans — who I know are being hurt by an outdated, confusing, inconsistent approach that's contrary to our value of service and individual merit."
Defense Secretary Ash Carter pauses while speaking at the Pentagon during a news conference, Friday, May 1, 2015, to discuss the Defense Department's annual report on sexual assault in the military. (AP Photo/Manuel Balce Ceneta)
Defense Secretary Ashton Carter, accompanied by Joint Chiefs Chairman Gen. Martin Dempsey, pauses while testifying on Capitol Hill in Washington, Wednesday, March 18, 2015, before the House Armed Services Committee hearing on President Obama's use of military force proposal against IS and the Defense Department's budget. (AP Photo/Molly Riley) **FILE**
Joint Chiefs Chairman Gen. Martin Dempsey testifies on Capitol Hill in Washington, Wednesday, March 18, 2015, before the House Armed Services Committee hearing on President Obama's use of military force proposal against IS and the Defense Department's budget. (AP Photo/Molly Riley)
House Armed Services Committee Chairman Mac Thornberry, Texas Republican, questions Defense Secretary Ash Carter as he testifies on Capitol Hill in Washington on March 18, 2015, before the committee's hearing on President Obama's use of military force proposal against the Islamic State and the Defense Department's budget. (Associated Press) **FILE**
After critics decried Ferguson, Missouri, police using Defense Department-donated heavy artillery against rioting protesters, some law enforcement agencies are returning military-grade weaponry back to the Pentagon. (Associated Press)
This handout photo provided Defense Department shows Marines and sailors with Marine Expeditionary Brigade – Afghanistan load onto a KC-130 aircraft on the Camp Bastion, Afghanistan flightline, Monday, Oct. 27, 2014. The handover of the U.S. Marines' main base to Afghan control in the hardscrabble Helmand province is more than a signal that America’s longest war is ending. It is a reminder of the enormous loss and sacrifice by Marines who swept in as part of President Barack Obama’s surge of forces against a resurgent Taliban in 2009. (AP Photo/Staff Sgt. John Jackson, Defense Department, US Marines)
FILE - This Sept. 17, 2013 file photo shows an armed officer who said he is with the Defense Department, standing near guard the gate at the Washington Navy Yard the day after a gunman launched an attack inside the Yard. An independent review triggered by the Washington Navy Yard killings last year says threats to Defense Department personnel and facilities increasingly are coming from within. It says the department must rethink its outdated security theory that suggests defending the perimeters can keep threats away. Instead, it says that terrorism, espionage and even physical threats are coming from trusted insiders. (AP Photo/Jacquelyn Martin, File)