EE WAS LOOSENING A BOLT TO CHANGE THE OIL ON A DRILL WHEN THE EE FELT PAIN IN UPPER RIGHT ARM / SHOULDER. EE WAS EVALUATED BY MEDICAL PERSONNEL AND RELEASED BACK TO NORMAL DUTIES. EE HAS RECENTLY BEEN RE-EVALUATED AND TESTING PERFORMED RESULTING IN A SURGICAL RECOMMENDATION FOR A TORN ROTATOR CUFF. SURGICAL DATE IS PENDING AT THIS TIME. EE REMAINS FULL DUTY UNTIL SURGERY DATE.