Russian President Vladimir Putin (R) greets his Syrian counterpart Bashar al-Assad (L) during a meeting at the Kremlin in Moscow on October 20, 2015. (ALEXEY DRUZHININ/AFP/Getty Images)
A Standard Missile-6 demonstrating its ability to intercept ballistic missiles in their final seconds of flight during live fire tests July 28-Aug. 1, 2015, aboard the USS John Paul Jones. (Photo: Missile Defense Agency
Military personnel arrive in a Chinook before Iraqi soldiers take part in a live-fire exercise for under the surveillance of US-led coalition forces at Basmaya base, Iraq on January 27, 2016. (AHMAD AL-RUBAYE/AFP/Getty Images)
The aircraft carrier USS John C. Stennis (CVN 74) alongside the Military Sealift Command fast combat support ship USNS Rainier (T-AOE 7). (DoD/Released)