In terms of military attack helicopters, perhaps no two aircraft are as iconic as the United States AH-64 Apache and AH-1Z Viper. Both helicopters have been critical components of American military ...

"U.S. Army Soldiers participate in rappel training during the Ranger Course on Camp Merrill in Dahlonega, Ga., July 12, 2015. Soldiers attend the Ranger Course to learn additional leadership and small ...