L to R - Pierson, MSG Orville Robinette, supervising? the brush burning. Notice; behind them are the Recon tents, canopy, water "buffalo" trailer, and bunker with a belt fed 40MM grenade launcher. Jay scrounged, appropriated, stole? it. It was made for the Navy, probably for their gunboats plying the Mekong Delta waterways. It was hand cranked.