• A demonstrator holds up a miniature copy of Venezuela's constitution in front of the nation's flag at a government rally in Caracas, Venezuela, Tuesday, April 13, 2004.
  • Saudi soldiers are seen on top of their tank deployed at the Saudi-Yemeni border, in Saudi Arabia's southwestern Jizan province, on April 13, 2015
  • In this photo taken on Friday, March 4, 2016, A Russian military police officer stands guard at the Russian air base in Hemeimeem, Syria, with an Il-20 electronic intelligence plane of the Russian air force is in the background. An Il-20 aircraft was shot down Tuesday, Sept. 18, 2018 by a Syrian missile over the Mediterranean Sea, killing all 15 people on board, as the Syrian military fired on Israeli fighter jets attacking targets in northwestern Syria
  • NATO and US flags flutter as U.S. Air Force F-22 Raptor fighter flies over the military air base in Siauliai, Lithuania, April 27, 2016.
  • March 3, 2002 file photo shows a member of the public watching a US Air Force B 52 bomber arriving at RAF Fairford in western England. Pushing his vision of a nuclear weapons-free world, President Barack Obama returned to Prague on Thursday, April 8, 2010 to sign a pivotal treaty aimed at sharply paring U.S. and Russian arsenals — and repairing soured relations between the nations. With that, they will commit their nations to slash the number of strategic nuclear warheads by one-third and more than halve the number of missiles, submarines and bombers carrying them, pending ratification by their legislatures. The new treaty will shrink those warheads to 1,550 over seven years. That still allows for mutual destruction several times over. But it will send a strong signal that Russia and the U.S., which between them own more than 90 percent of the world's nuclear weapons, are serious about disarmament.
  • Flying High: Day-to-Day Life of Russia's Air Forces
  • Meteor
  • JAS-39 Gripen
  • Seen through the window of another aircraft, an Royal Netherlands Air Force F- 16 military fighter jet participating in NATO's Baltic Air Policing Mission operates in Lithuanian airspace during a Ramstein Alloy air force exercise, Tuesday, April 25, 2017
  • WC-135 Nuke Sniffer
  • Ramstein Air Base, Germany
  • US forces and Afghan commando are seen in the Achin district, Afghanistan. (File)
  • Soldiers park their amphibious vehicles on a ship as they participate in a massive amphibious landing during NATO sea exercises BALTOPS 2015  in Ustka, Poland, Wednesday, June 17, 2015
  • A Norwegian P-3 Orion aircraft at Andøya, in 2011
  • A technician works on a German Tornado jet at the NATO air base in Incirlik, Turkey.
  • German Defence Minister Ursula von der Leyen, left, inspects a German air force aircraft as she visits the German contingent at the Al Azraq air base in Jordan, Saturday, Jan. 13, 2018
  • Air Force Contrails
  • Soldiers of the Air Defence Missile Squadron 2 walk past Patriot missile launchers in the background in Bad Suelze, northern Germany on December 4, 2012
  • Indian Air Force MiG-21. (File)
  • McDonnell Douglas F-18 Hornet military airplane of the Finnish Air Force