Four firefighters suffered minor injuries fighting the massive Lake Fire, which has prompted more evacuation orders for a handful of mountain communities, fire officials said Thursday.

The fire ballooned to more than 25,000 acres, and its containment fell from 38 percent to 19 percent, according to Rob Kopack with the U.S. Forest Service incident command.

Residents of the Burns Canyon and Rimrock areas were asked to leave their homes Wednesday night as the fire, deep in the San Gorgonio Wilderness, began to spread, officials said. Nearby Pioneertown was under a voluntary evacuation.

A shelter was set up for evacuees at Copper Mountain College in Yucca Valley, and plumes from the blaze could be seen Thursday from as far away as downtown San Bernardino.

• Video: Growing Lake Fire prompts evacuations

On Wednesday, about 360 campers were evacuated from Camp Oakes in the Lake Williams area as a precautionary measure.

The campers were taken to Community Church Big Bear in Big Bear Lake, where the American Red Cross set up an evacuation center.

Other communities under evacuation orders included areas along Highway 38 east of Angelus Oaks to Onyx Summit, Barton Flats, Seven Oaks, South Fork, Heart Bar and Rainbow Lane.

The fire has traveled about 14 miles since it ignited last Wednesday, Kopack said.

Others have prepared for evacuation, including Brad Harris of Erwin Lake.

Harris and his wife, co-owners of Broadway Cafe in Big Bear Lake, gathered important documents and photos in preparation for an evacuation order. They had to evacuate the area about 10 years ago during a fire in Running Springs, Harris said.

Air firefighting efforts were temporarily placed on hold Wednesday evening when a hobby drone was spotted flying over the Lake Fire.

“We can’t have any kind of drone up there as we’re fighting fires due to safety measures,” said Carlos Guerrero, a Forest Service spokesman in a recent interview. “We are trying to avoid a midair collision up there. If we spot one, we will shut down all air operations — and that leaves ground crews with no air support.”

The entire air fleet fighting the Lake Fire was grounded Wednesday, thwarting firefighters’ efforts to drop retardant and create a fire break, and it could have killed people in a plane, according to Forest Aviation Officer Mike Eaton.

Several crews were at the ready Thursday morning to help with structure protection in various areas of the mountain communities. For the past few days, firefighters have been wrapping homes and cabins in the Jenks Lake and Rainbow Lane areas to help protect the structures.

“It looks like a metallic film, and it reflects the heat, which protects the homes,” explained Shawna Hartman, incident spokeswoman.

The Lake Fire was ignited on June 17 in the Jenks Lake area. The cause remained under investigation.