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If there was ever a reason to leave the cocoon of air-conditioning at work, it might be this: The FDNY's official 2007 Calendar of Heroes (the one we mentioned in June was the non-official one) is on sale today and the firefighters will be near Herald Square signing the calendars. The Daily News says that calendar's cover boy is Mark DeRosa from Ladder 18 on Pitt Street: He's 22, single, from Staten Island and "auditioned half as a joke and half-seriously, but I'm proud to be part of it."

The firefighters will be at Greeley Square, with in that area between Broadway and Sixth Avenues between 32nd and 33rd Street until 3:30PM. Tag those photos on Flickr with "gothamist" when you cool down.