EE WAS WASHING DOWN THE DRAIN/SIDEWALK ON THE SLOUTH SIDE OF THE MILL BUILDING. BUILDUP WAS HEAVY AND NEEDED LOTS OF WATER. EE WAS GOING TO SET THE HOSE ON THE GROUND AND LET IT FLOW. AS HE BE NT OVER HE FELT A ""POP"" IN HIS LOWER BACK. HE COULD NOT BEND OVER. WAS TAKEN TO AVMC WHERE HE WAS SEEN BY DR. LIGHT DUTY