"We’ll never know. Rep. Collins presumably wants the opportunity to find out should there be a similar incident."

So, Collins wants to carry a dangerous weapon so he can "find out" if he can stop a shooter. What if he did carry his gun and tried to use it and then found out the hard way that he couldn't stop the gunman, or he injured or killed someone else? The problem with all of these gun supporters is that they are all delusional thinking that  carrying a gun will always result in them being a hero and that there is no other negative outcome.