These celebrities aren't in Hollywood anymore.
In the dramatic trailer for Special Forces: World's Toughest Test, a group of 16 celebs—including Jamie Lynn Spears, Kate Gosselin, Hannah Brown, Montell Jordan and short-lived White House Director of Communications Anthony Scaramucci—are put to the test in a series of challenges from the playbook of the actual Special Forces selection process.
"I don't care how rich or famous they are," Directing Staff agent Mark "Billy" Billingham says in the trailer, "they've entered our world and they will play by our rules."
So, what are some of the grueling tests? As seen in the trailer, the star-studded lineup—which also includes professional athletes like Dwight Howard, Gus Kenworthy, Carli Lloyd and Danny Amendola—fall out of helicopters, walk on high wires and get submerged underwater.
The brutal stunts push the celebrities to their breaking points, including former Olympian Kenworthy who says, "I have never worked harder for my life."
Meanwhile, Zoey 101 alum Spears, who is the younger sister of Britney Spears, gets emotional in the trailer. She says through tears, "I just want to feel like I'm worth something."
Special Forces: World's Toughest Test also features some intense rules and parameters.
"In this unique series, the only way for these recruits to leave is to give up on their own accord, through failure or potential injury, or by force from the Directing Staff," according to the network. "Viewers will see the recruits face the harshest of environments that simulate the highly classified selection process, pushing themselves in a way they have never been challenged before."
The series also stars Beverley Mitchell, Tyler Florence, Kenya Moore, Nastia Liukin, Mike Piazza and Dr. Drew Pinsky.
Special Forces: World's Toughest Test premieres Jan. 4 at 8 p.m. on Fox.