EE WAS WALKING DOWN A DRIFT IN KNEE DEEP WATER. HE STEPPED INTO A SLOT, (CUT FOR DRAINAGE) AND SPRAINED HIS KNEE. THE EE WAS CONSIDERED A NON-RECORDABLE UNDER PART 50 UNTIL HE RETURNED FROM VA CATION ON 7-14-03 AND WAS GIVEN A PRESCRIPTION AND ON 7-16-03 WHEN HE WAS GIVEN A PRESCRIPTION FOR PHYSICAL THERAPY.