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  1. US Air Force F-16 aircraft fly off the wing of a KC-135 Stratotanker
  2. Nurses of a field hospital in France, 1944
  3. An Army AH-64D Apache helicopter prepares to land aboard USS Ponce
  4. Aerial view of the aircraft carrier USS Harry S. Truman
  5. Illustration of a pterosaur skateboarding
  6. Firefighters Put Out A Fire During At Minot Air Force Base, North Dakota
  7. View from space of Paris, France, showing pattern of the street grid and city lights
  8. Bow on view of the US Navy experimental High Speed Vehicle 2 HSV2 Swift
  9. Civil War portrait of Major General George Armstrong Custer
  10. X48B Blended Wing Body in flight
  11. An Airman guides an E2C Hawkeye
  12. North American F-51D Mustang
  13. Magnetic field lines on the Sun
  14. Santa Arrives By A C-130 Hercules
  15. The core of the globular cluster Omega Centauri
  16. Philadelphia Pennsylvania
  17. USS Spruance is pierside at Naval Weapons Station Seal Beach, California
  18. A menacing line of hurricanes Katia, Irma and Jose
  19. The newly discovered planetlike object dubbed Sedna
  20. Mock aggressors from Republic of Korea Marine Corps prepare their tank
  21. A US Air Force RC-135 Rivet Joint reconnaissance aircraft
  22. Mystery: Inspirational Quote and Motivational Poster
  23. An F/A-18C Hornet taking off
  24. A US Air Force F-16C Fighting Falcon in flight over Afghanistan
  25. Venus centered on the North Pole
  26. A CH53E Super Stallion helicopter takes off from USS Makin Island
  27. Sailors rush to chock and chain a CH 46E Sea Knight helicopter
  28. An MV-22 Osprey takes off from the amphibious assault ship USS Kearsarge
  29. The John F Kennedy Space Center Americas spaceport
  30. Microscopic view of virus
  31. MV-22 Osprey aircraft land aboard USS Peleliu
  32. Vintage Travel Poster For North Coast Limited In The Montana Rockies
  33. An F16 Fighting Falcon flies near base
  34. Ships of the Nassau Strike Group transit westward in the Atlantic Ocean
  35. Persian Gulf
  36. Conceptual image of human backbone
  37. A KC-135 Stratotanker refuels a NATO E-3 Sentry aircraft
  38. US Army soldiers offload a Humvee at Red Beach Camp Pendleton California
  39. US Marines communicate with their patrol base during a security patrol in Afghanistan
  40. Lithograph Poster Advertising The Ringling Bros Circus, 1913
  41. Microscopic view of poliovirus
  42. US Navy Petty Officer leans out the door of an SH60 Seahawk
  43. Security Forces Members Demonstrate Their Ability To Perform Medical Evacuations
  44. A pair of combat boots belonging to a U.S. Marine Corps Sergeant
  45. US Navy Midshipman from the US Naval Academy march down Constitution Boulevard
  46. Navy SEALs jump from the ramp of a C-17 Globemaster III over Virginia
  47. A US Marine Fires A M-240B Machine Gun Atop A Humvee
  48. Members of the US Air Force Academy