Can "The Sleeve" protect students in the event of a school shooting? One teacher thinks so

MUSCATINE, IOWA (WITI) -- It's the last thing a teacher wants to think about: What to do when a shooter is in the building?

Mass shootings in the past year like that at Sandy Hook Elementary School -- and the latest incident Tuesday in Oregon have led a teacher at West Middle School in Muscatine, Iowa to take action.

According to WQAD, Daniel Nitzel -- a teacher at West Middle School, has developed "The Sleeve."

He says he got the idea from the school's active shooter training program.

“We were instructed to tie a belt or a cord around the closer arm (of the door). It seemed like a logical way to secure a door without having to go into the hallway, it took us a long time to get a cord, stand on a chair, and tie a knot -- which could potentially be the most important tie of your life," Nitzel told WQAD.

"The Sleeve" is a 12-gauge carbon steel case that fits around the door's closer arm -- securing the door from the inside.

"The Sleeve" can withstand more than 550 foot-pounds of force -- making it nearly impossible to open the door from the outside.

Nitzel and others have formed a company called "Fighting Chance Solutions" -- and 10 months later, "The Sleeve" is ready -- and they're waiting for a patent.

CLICK HERE for more on this story via WQAD.com.