Officials say two helicopter pilots were killed in a crash while battling a wildfire at Yosemite National Park in California.

Federal investigators are looking into what caused the helicopter to go down near Mariposa.

A helicopter battling the Dome Fire in Yosemite National Park has crashed, killing two people. According to the Federal Aviation Administration, the Eurocopter AS332L1 crashed at 2:55 p.m. Sunday, ...

By Andrew Hay Sept 21 (Reuters) - Two pilots died when their helicopter crashed on Sunday afternoon while dropping water on a ...

Two members of a helicopter crew battling the Dome Fire in Yosemite National Park were killed in a crash on Sunday, the U.S Forest Service said.

CALIFORNIA, USA — Two helicopter pilots were killed when their aircraft crashed Sunday afternoon while conducting water drops on a wildfire at Yosemite National Park, officials say.

Two people died when a helicopter crashed while conducting water-bucket drops to fight a wildfire in Yosemite National Park in California.

The crew members, under contract with the U.S. Forest Service, were in a helicopter that crashed on Sunday while fighting a ...

Two people died when a helicopter fighting the Dome Fire in Yosemite National Park crashed during water drops.

A firefighting helicopter crashed on the Dome Fire, killing two pilots as the Yosemite-area wildfire continued to expand.

A helicopter helping to battle the Dome Fire has crashed in Yosemite National Park with two people on board, according to the Federal Aviation Administration. The Eurocopter AS32 helicopter reportedly ...