I know a guy who blew a finger off, set his room on fire, and proceeded to crash a jeep into a house when he passed out driving to the hospital. He may not really be a specialist though. More of a cautionary tale maybe. We call him Boomer.
I was at a friend’s house when his dad found his little brother’s pipe bomb making operation. HOLY SHIT was his dad pissed. Don’t know what happened to the pipe bombs, but little brother now works in armor development for the Department of the Army.