Let's see: 1 million rounds in one minute, a tripod, and a lot of replacement machineguns and replacement barrels.
I can see it now.
Sarge, we've just been warned about an attack tonight..... Put the first million mom machine gun over in that corner, put the second one in that other corner, and park the 2 million ammo trucks behind the mess hall.
Make sure all the drivers get something to eat, and find out how many have even one ammo clip for their M-16.