B52.
A friend was a crew chief in the early sixties, and he was quite used to jumping off the wing tip
when fully fuelled, assuming that wing LG was on the ground.
About a 6 to 8 foot drop.
Not so when he stepped off the opposite wing when the AC was light.
It's a big drop then!. Broken bones.
(sorry I don't know how to make images smaller).
Russell