As I've gotten older I realize I'm no longer 10ft tall and bullet proof. Heights didn't bother me and to a great extent neither did confined spaces. Now both do to a certain extent. I hate the transition from a roof to the ladder I used to get on the roof.
The tower below requires the Soldier and/or team to get from floor to floor using the outside edge of the floor. No problem back in the day for me.
Oh yeah, I hate snakes. Nearly got bit by a rattler in my teens.