EE REMOVED THE RIGHT RIB CATHEAD FROM THE SECTION POWER CENTER LOADING TO FIND A GROUND ON THE CABLE HE WENT TO RIB WHERE REFUND THE GROUND. AS HE WAS LEAVING HE SLIPPED AND FELL CATCHING HIMS ELF WITH LEFT HAND AGAINST RIB RECEIVING A SHOCKFROM THE TESTED TRANSPORTED TO LOGAR GROUND FOR OBSERVATION EKG NO ABNORMALITIES.