Dierks Bentely attended the L.A. premiere of Only the Brave on Oct. 8.

The movie is based on the true story of the Granite Mountain Hotshots, a group of elite firefighters who lost their lives in the tragic Yarnell Hill wildfire that devastated parts of Arizona in 2013. Only the Brave, which stars Josh Brolin, Miles Teller, Taylor Kitsch, Jeff Bridges and Jennifer Connelly, opens nationwide on Oct. 20.

Dierks co-wrote and performed a new song, “Hold the Light,” for the movie’s soundtrack.

“This is at the top, if not the most meaningful experience I’ve ever been a part of,” said Dierks. “It hits me harder than any other song I’ve had a chance to be a part of. Over the last couple years I’ve met and gotten to know Brendan, the sole survivor, and my mom has met with some of the guys’ families, and it’s still unfathomable to put yourself in any of their shoes. But, our goal was to create a message of hope and love. I’m honored to have been a part of it.”

Dierks, Josh Brolin, Jennifer Connelly, Miles Teller, Jeff Bridges, Nina Dobrev and Taylor Kitsch attend the L.A. premiere, where 100 first responders were honored for their service to those affected by the recent hurricanes, earthquake in Mexico and Las Vegas shooting.

Check out the photo gallery below, courtesy of Tammie Arroyo, AFF-USA.com.