FEMA's Criswell stated that the U.S. military is prepared to act in response to the California wildfires.

• In California, there are active duty U.S. military personnel on a "prepare to deploy" order, as confirmed by FEMA administrator Deanne Criswell.
• Criswell expressed her greatest worry about the ongoing wildfires in Los Angeles, stating that the city remains in a perilous state.
• The wildfires in California could be exacerbated by high winds, according to Gov. Gavin Newsom.

FEMA Administrator Deanne Criswell announced on Sunday that the U.S. military is ready to assist in controlling the wildfires that have destroyed Los Angeles.

"Active duty military personnel are on standby to deploy and support the firefighting effort, as stated by Criswell in an interview on ABC's "This Week." The incident commanders at each command post will know exactly what they need, and if they require additional support, the military personnel will be able to provide it."

According to the Department of Defense, there are 500 active duty Marines and 10 Naval helicopters.

Criswell stated that she would leave the decision to request military assistance to the incident commanders, as they are better equipped to determine where and when assistance is needed.

"In these situations, it's strategic to ensure safety and not overcrowd the space with too many aircraft. We need to have specific strategies in place, but we also need to be prepared for any potential need and be able to move quickly if necessary."

Criswell expressed her "greatest worry" about the ongoing wildfires in Los Angeles, which she believes still pose a "dangerous" situation.

"In a separate interview on ABC's "This Week with George Stephanopoulos," she stated that the red flag warnings have been reissued, the winds are returning, and it is crucial to ensure the safety of individuals."

"Criswell stated, "Although many want to return home and see what's left, the most crucial aspect is ensuring the safety of both the public and firefighters while attempting to control the fire.""

The wildfires in California could be exacerbated by strong winds in the next 48 hours, according to Gov. Gavin Newsom.

"The challenge is the winds. We're expecting the winds to return this evening, Sunday night, and peak on Monday. We anticipate gusts of 50-plus miles per hour, subject to change. In preparation, we're pre-positioning assets not only in the theater but also in other counties, moving resources farther south in anticipation of potential flare-ups in new locations."

On "Face the Nation with Margaret Brennan" on Sunday, FEMA's Criswell stated that the changing winds pose a concern for the safety of firefighters and their ability to contain the fire. He urged people to listen closely to local officials' instructions to stay safe and avoid harm.

Officials have been adequately prepared to handle the fires, according to Criswell, but they have never encountered 100-mile-an-hour winds that are exacerbating the fire, and it is the combination of these winds and weather conditions that is determining the fire's trajectory.

Criswell stated that the challenge of securing the perimeter and saving homes is amplified due to the high population density of the area.

Criswell also warned affected Los Angeles residents against returning to their homes.

""Many people likely want to return to the area and inspect their homes, but with the winds picking up again, it's unpredictable which direction they will blow," she stated on CNN's "State of the Union" on Sunday."

As per NBC News' report, the Eaton fire is currently 27% contained, based on data from the Angeles National Forest branch of the U.S. Forest Service. Meanwhile, the Palisades fire is still at 11% containment, according to Cal Fire.

— CNBC's Yun Li contributed reporting.