Two HH-60 Pave Hawks refuel over the desert surrounding Davis-Monthan Air Force Base Arizona. StocktrekImages
A Japanese Maritime Self-Defense Force MH-53 Sea Stallion lands on the flight deck of USS Denver. StocktrekImages
An Army UH-60 Black Hawk helicopter landing aboard the USS Underwood off the coast of Honduras. StocktrekImages
A U.S. Marine Corps CH-46 Sea Knight helicopter launching flares over the desert near Al Taqqadum Iraq. StocktrekImages