"I honestly thought it was an explosion," Napiwocki told the Stephens Point Journal. "I didn't know what it was; we didn't see it coming."
Napiwocki and Rhodes fled the office while the deer, which they described as a large buck, explored the room in an apparent search for an exit.
The deer made its way out of the office and into a hallway, eventually leaving the building through the front door.
"Thankfully no one was harmed, including the deer that showed itself out the front door," PCS said in a Facebook post.