I don't think it's something he "trained himself to do." He's always taken risks. He went to juvie for breaking and entering (with thermite) as a kid. He's a c

I don't think it's something he "trained himself to do." He's always taken risks. He went to juvie for breaking and entering (with thermite) as a kid. He's a college dropout. The pattern from early in his life has been to do whatever he wanted without any kind of risk analysis, not following "common sense."