I was riding on a C-17 today. The cargo area has 8 emergency exits. And the tail opens up... it’s a cargo plane after all.
Looking across the bay, I noticed something peculiar and asked the crew if it meant what I thought. Yessir it does.
If you don’t like the many means of egress made for you, you can make one for yourself. Just pull the hatchet out of the holder and go Jack Torrance on the wall where they marked out a spot.