I thinnk my most daring was requalifying for my HALO parachute jump just before I left the Royal Marine Commandos, I'd been injured in the Falklands conflict and that started my bladder IC again, I was hoping if I could re pass all the tests I needed to they'd let me stay in. Unfortunately it was actually my spine that let me down as I couldn't complete the final forced battle yomph (that's march to you non marines)
And for those that don't know a military HALO jump is frokm over 5 miles high (a lot of the guys wory nappies just incase).