EE WAS ON THE SURFACE AT THE WAREHOUSE SUPPLY YARD. HE WAS RETRIEVING AN AIR LOCK DOOR. 2 AIRLOCK DOORS WERE AVAILABLE & LAYING ON TOP OF EACH OTHER. THE EE PICKED UP THE TOP DOOR AND STEPPED THRU THE SAFETY GLASS OF THE 2ND DOOR THAT HE WAS STANDING ON. HE SUSTAINED A LACERATION TO HIS RIGHT ANKLE THAT REQUIRED SUTURES.