Abstract: At 5:30 a.m. on August 3, 2007, Employee #1 was working as a waiter, and had gone into the storage room sometime between 10:30 to 10:45 p.m. on August 2, 2007. Employee #2 had come in to the backside of the restaurant before 5:30 a.m. on August 3, 2007. He heard a hissing sound and thought that it was running water. Employee #2 went to see if there was running water but there was not. He then went back to the storage room and heard the hissing sound. Employee #2 attempted to open the door to the storage room but was not able to get it open, since Employee #1 had apparently collapsed earlier and was blocking the door. Employee #2 could hear the hissing of a gas cylinder, which was hissing every 20 seconds intermittently, and he called emergency medical services. The paramedics and the Coronado Police Department arrived, and the San Diego County Medical Examiner arrived later. They found the body of Employee #1 and one of the carbon dioxide cylinders lying on the ground with the valve opened about 1/8th of a turn and fully discharged. Employee #1 was declared dead, and the San Diego County Medical Examiner took the body to the morgue.