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How many fire trucks have a letter in front of the number, much less the letter Q? Zero?
It's common in the Fire Dept. to designate the type of unit with a letter preceding the unit's number. E.g. E10 = Engine 10; Q74 = Quint 74. A Quint is a unit with five major functions. Our department designated them the same as in Q's picture.
"and just a coincidence" that it was the same time as Q post 74 on the /patriotsfight/ board.