ST. LOUIS • These are the ninjas who didn’t make the cut. But the fact that they are willing to camp out on a downtown sidewalk for several days — for another chance to attempt an obstacle course — suggests they aren’t just wannabee ninjas.

“I just want to beat the course,” Dave Cavanagh, 28, a firefighter from Boston, said of the “American Ninja Warrior” television competition being set up at Soldiers Memorial.

The show is supposed to be taped Sunday night starting at 9 p.m. Cavanagh flew in Wednesday to secure a No. 5 spot in a line of 23 potential walk-ons who had assembled by Friday afternoon.

About 100 people already convinced show organizers they have the chops to take on a series of obstacles requiring upper body strength, an incredible grip and many other skills. They submitted videos showing their physical prowess and captivating personal stories.

They don’t have to endure this line.

The camp is made up of remnants of the rejection pile. Still, they hope for good weather and spare showtime so that some of them might get a shot at the challenge. In the event any of them get that chance, and complete the full obstacle course, they’d qualify for the national final this summer in Las Vegas.