Blowing the picture up twice its size I count 12 cases of ammo on the front, a M60 on the front left, quad 50's in the center, 50 cal left rear.
Ten soldiers are visible, but it wouldn't surprise me if the kitchen sink and cook are out of sight.
I found this picture on the Internet several years ago, plus this information;
December 1990, the battalion deployed to Southwest Asia as part of Operation Desert Shield-Desert Storm. For this action, they received two campaign streamers and were awarded a Valorous Unit Citation.