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By Danielle Brennan

Sometimes it's OK to trick your girlfriend — specifically when it comes to popping the question.

That's what Ohio firefighter Justin Deierling did last Wednesday when he surprised his girlfriend Megan Zahorec with a marriage proposal in front of the staff and students at Greentown Intermediate school, in North Canton, Ohio, where she is a counselor. 

Zahorec, 27, thought the building had emptied for a fire drill. But soon, she saw a sign mounted on the side of the fire truck. 

A fellow firefighter unveiled Deierling's proposal sign. Today

Then, Justin, 31, got down on one knee. Her response: "Yes."

Justin Deierling gets down on one knee to propose to Megan Zahorec during the staged fire drill.Today

Adam Deierling, Justin's brother, who filmed the proposal, told that Justin had been planning the big moment for two weeks. "He didn't let anyone in on it except a few guys at the firehouse, a couple people at the school, and then me, of course," he said in an email.   

Justin, who proposed on their six-month anniversary, first met Zahorec as a volunteer firefighter, when he passed out water to students at a school walk-a-thon.

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