Deadly helicopter crash kills 2 pilots battling raging wildfire in Yosemite

The helicopter went down while conducting water bucket drops on the Dome Fire on Sunday, according to The Associated Press (AP).

The pilots were the only people aboard the aircraft. They worked for Precision Helicopters, a company contracted to support the firefighting operation, the AP reported.

King had previously worked on wildland fires in Alaska and extensively alongside the Alaska Division of Forestry & Fire Protection, according to a statement from the agency.

The agency said King had close ties to its wildland firefighting community, including loved ones who currently work for the division.

"These two men brought honor to the mission. Their dedication and service will never be forgotten," the company wrote.

The FAA and National Transportation Safety Board will investigate the crash, with the NTSB leading the investigation, according to the FAA.

About 580 personnel were battling the wildfire, which had burned roughly 4.7 square miles and was about 15% contained, the AP reported.

A procession carrying the two deceased helicopter pilots was seen traveling through Merced on Monday, Sept. 21, according to Fox 26 in California. 

Writing on Facebook about the somber procession shown on video, one user said, "Prayers for their families and loved ones. May they rest in peace."

The Associated Press contributed reporting.