LOS ANGELES (CBSLA.com) — Hundreds of Los Angeles County Fire Department firefighters early Tuesday morning were headed to Prescott, Ariz. for the memorial service honoring the 19 firefighters who died in the Yarnell Hill Fire.

Close to 200 firefighters were bused around 2 a.m. to join an additional 100 LA County firefighters along with thousands of colleagues from around the world.

“We are one big family,” LA County Fire Capt. Tom Richards told KNX1070. “Once tragedy happened my office was getting phone call after phone call of people asking ‘What can we do to help?’”

Sending our thoughts and prayers to the Hawthorne Police Dept. With a heavy heart we offer our condolences.—
LACounty Fire PIO (@LACoFDPIO) July 09, 2013

The 19 Granite Mountain Hotshots, including five Southern California natives, were killed June 30 in a fast-moving wildfire that burned nearly 8,400 acres.

The memorial service began at 11 a.m.

For those wishing to donate money to help the victims’ families, visit the LA County Fire Department website.

RELATED STORIES:

5 Southland Natives Among 19 Firefighters Killed In Ariz. Wildfire 

Family, Friends Remember 3 Orange County Firefighters Who Died In Arizona Wildfire

Hemet Firefighters Donate Funds To Families Of Local Fallen Hotshot Crew Members