While deployed, I found myself driving a dump truck that was assigned to a driver who got himself restricted to the ship.
So, here I am in Egypt with a tactical dump truck (M51) which is probably 40 years old. It was one of only two wheeled vehicles that survived the landing from the Med across the soft sandy beach into the big desert. So, I ended up hauling everything from water to ammo.
An Engineer Platoon commander, 1st LT needed a couple tons of demolitions hauled out into the desert. C4, dynamite, 55 gallon drums of diesel fuel, and several rolls of Det cord. He also wanted to throw a big ammo can full of blasting caps back there with the demo. I refused to haul the blasting caps back there, so he put them in the glove box and rode with his feet against the dashboard, so they couldn't fall out.
After we got to the site, I told him to give me just one of the 40 caps he had in the glove box. I put it in an ammo can and ran some wire about 50 feet away and set that one blasting cap off in that ammo can. He was SHOCKED when it blew that steel can up like a balloon and ripped shrapnel holes all through it. He realized he would have blown a big hole in the sand where the truck was.
He was a very humble LT after that.
That is one example of why Marines say the most dangerous weapon they have is a 2nd Lt with a map.