The event, originally meant to honor emergency workers who responded to the 2018 Woolsey Fire, recently changed focus as a new batch of fires broke out in the region.
"Little did we know when planning this annual event that California, my second home, would once again be hit with devastating fires," McConaughey said, according to the news release.
He added that he and the volunteers wanted to "say thank you, shine a light on [first responders'] unwavering conviction, and hopefully inspire others to get involved and help in their own communities."
On Saturday, the Los Angeles Fire Department's Central Bureau shared photos from the event on Instagram.
"Huge thank you to Operation BBQ relief and #matthewmcconaughey for donating trays of delicious BBQ to our crews around the city," the post read.
Wild Turkey and OBR also plan to prepare meals for first responders in Dallas on Tuesday, New Orleans on Nov. 12 and Chicago on Nov. 19, according to the news release.
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