How Do You Spot Suspicious Behavior?

The killings in Colorado have us asking, how do you spot someone who is about to commit a crime?  We talked to state and private security experts to get answers. 

The Minnesota Bureau of Criminal Apprehension, the BCA, has more than 300 agents, analysts and scientists.  They're called on in the toughest of cases. 

Private security firms work on the other end of it, training you to keep yourself safe before something happens. 

Drew Evans, a seasoned agent, has analyzed hundreds of criminal minds.  He concedes there isn't one shooter profile that fits all cases. 

He says most shooters tend to be anonymous in their communities because most people don't know what to look for.  Common warning signs include:  severe depression, withdrawal from society, making ominous statements on the internet and suffering a recent loss. 

Investigators say if you see something, say something.  A person might need mental help, or more, and police would be there to assist in either situation. 

At SecureForce in Carver County, Joe Szorcsik trains business executives, athletes and everyday citizens in personal protection and survival. 

He says if you're in a public place, you probably can't prevent a outburst of violence from happening, but you can take steps to not be a victim. Know how to get out, find an escape route or exit strategy.