GOFFSTOWN, N.H. —

Exclusive video obtained by WMUR's News 9 Investigates shows the moment two dispatchers in Hillsborough County stopped a man wearing only a Speedo and a hat from entering the building.

Cory Nickerson, 50, of Goffstown, has pleaded not guilty to several charges, including assault, criminal threatening and false imprisonment.

Police said two dispatchers were assaulted in the incident on Aug. 9, and one was seriously hurt.

The surveillance video shows Nickerson interacting with one of the dispatchers as he appears to be trying to get from the vestibule of the Hillsborough County Sheriff's Office into the dispatch center.

Police said Nickerson was able to force his way into the building by following an employee through a secured door. He then allegedly physically assault

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