Kirk Shooter Did Not Have a Rifle With Him When He Jumped Off The Roof So How Did the Rifle With Trans Transcribed Cartridges End Up in the Woods

Boom! Also, how did he get on the roof? And he lives 3 hours away, so he never cased the place, he just drove there and made it happen? And where did he get this Mauser 30-odd-6 from, from 1950.

This is what evil hates!