The U.S. Navy flight demonstration squadron, the Blue Angels, fly in the Delta Formation over the aircraft carrier USS George H.W. Bush off the Florida coast near Mayport Naval Station, Fla., in the Atlantic Ocean, Dec.10, 2013. (DoD/Released)
Russian Prime Minister Vladimir Putin at the Russian armament exhibition Expo Arms-2011 September 9 2011 in the Urals town of Nizhny Tagil, Russia. (Sasha Mordovets/Getty Images)
A launcher carrying what analysts have said is a mock-up of the KN-08 ICBM moves through Pyongyang on April 15, 2012, as part of a military parade. (Pedro Ugarte/AFP/Getty Images)
French President Francois Hollande, center, inspects a model of the Royal Australian Navy's Collins class submarine during a visit to French defense contractor Thales' office in Sydney on Nov. 18, 2014. (Dan Himbrechts - Pool/Getty Images)
The flag of the European Union flies from the European Parliament information office in the European Quarter on February 25, 2016 in Brussels, Belgium. (Ben Pruchnie/Getty Images)
Syrian opposition members inspect the site of a suspected chlorine gas attack by Assad regime forces in Jobar region of Damascus, Syria on November 13, 2014. (Lokman Sair/Anadolu Agency/Getty Images)