In the Old Corps, we used a keyhole saw. Wuss!
Good one, sir!
Remember?
That was probably the finest single piece of gear a Marine in the field could possess -- after his weapon.
It will be interesting to see how many old farts in the forum know what we're talking about...
Back in 1775, in Tun's Tavern, recruiting started for the new Marine Corps. The very first Marine enlistee came in, signed the papers and took an oath. He was then told to go outside and wait for the other enlistees to go through the process. They would assemble later on the front yard.
After a few minutes the second enlistee came out and had a seat on the steps, beside the first. The first man looked at the second and began, "Son, let me tell you about the Old Corps."