This incident occurred to a friend who is a firefighter in the Midwest on a small combination department. What happened to him could happen to anybody at any time in any state. About 2:00am, while fighting a structure fire, he was doing outside overhaul work on an unattached garage that was an exposure fire from the fully involved house. Another firefighter brought over an 1 3/4″ line to suppress the pockets of fire in the garage wall. My friend stepped backward to avoid getting a “facefull” of water. He was wearing full gear and an SCBA, but did not have the mask in place. He need to move back a couple times, as the other firefighter moved along the garage wall. As he stepped back, he suddenly noticed there was nothing under his feet. He had stepped into an in-ground pool, and fell into the 4′ end. Luckily, he could quickly stand up, and other Firefighters nearby helped him from the pool. The pool had a strong floating vinyl cover, that had burned off on the end near which he was working. Had he gotten entangled in the cover, or been in the deep 8′ end, his outcome could have been very different. I guess the lessons learned are: Recon the area where you’re working, provide enough floodlights to turn night into day, and always be alert to what’s around above and behind you.