After my first contract I took a break and then reentered the Army. We were on a bus heading between sites when it broke down. It overheated as the serpentine belt broke on the engine. I took an equal length of 550 cord and put a knot every 3 - 5 inches and replaced the belt with it. Fired up the bus and it ran fine, even better.
Funny thing is, a more senior Sergeant cut the cord and said it wasn't an authorized repair and we could get in trouble so we should wait. Being the new guy I replied "You're not an authorized repair..."
He didn't know how to respond