THE INUJURIED EE WAS CHANGING OUT A 5 GALLON WATER JUG LOCATED IN HIS CONTROL ROOM. AS HE WAS REPLACING THE EMPTY CONTAINER HE FELT A POP IN HIS NECK AS HE GOT THE CONTAINER CHEST HIGH, THIS P OP RESULTED IN A STRAINED TRAPEZIUS MUSCLE IN HIS LEFT SHOULDER AND NECK AREA.