A Bell AH-1Z Zulu helicopter, foreground, and a Bell UH-1Y Yankee helicopter fly over Marine Corps Base Camp Pendleton, California. The Yankee and Zulu replace the two-bladed AH-1W Super Cobra and UH-1N Twin Huey helicopters, and can carry more weight, travel faster and conduct combat operations from a safer distance. With a fully integrated cockpit and more fuel, blades and overall power, the helicopters also can remain airborne longer without having to refuel. (Photos courtesy of Bell Helicopter)
