College students are using this app to show off their loaded guns and other weapons

On Sunday night, North Carolina Central University went on lockdown after a student was shot.

Last week, one person was killed and two others were shot when tempers appeared to have flared over a dice game at Tennessee State University. 

A gunman went on a rampage at Oregon's Umpqua Community College earlier this month and killed nine people.

My family had a horrifying scare when we learned that one student was shot and three more were wounded at the school my daughter attends, Northern Arizona University. (My daughter was not nearby or involved.)

All of this in just the month of October.

The scary thing is that a lot of college kids are packing guns these days.

We know because they're posting photos of their weapons on the photo/video sharing app going crazy on college campuses, Yeti Campus Stories. Yeti creates social networks for individual colleges where students show off images of college life. It launched in March and now has hundreds of thousands of daily active users, adding over 10,000 new users a day, the company tells us. 

The weapons students have shown off on Yeti range from hand guns to assault rifles. One even showed off a grenade.

These photos will make people wonder if October's shootings are anomalies or a precursor of things to come. They should spur authorities to look more deeply at this part of college life.

Here's a small sample of the gun photos we found that college kids have posted to the app: