For the sake of the BG's family, I hope he is paid up on his life insurance. The Colorado statute on the use of deadly force reads like this:
18-1-704 Use Of Physical Force In Defense Of A Person
2. Deadly physical force may be used only if a person reasonably believes a lesser degree of force is inadequate and:
c) The other person is committing or reasonably appears about to commit a kidnapping as defined in section 18-3-301 or 18-3-302. . .
If I think the guy had a weapon, he'd be pushing up posies in a few days. Don't mess with my kids!
Doc