At approximated 9:45AM on Thursday morning, military and Massachusetts State Police responded to a suspicious vehicle stopped near to Hanscom Air Force Base’s main gate near Concord, MA.  A screening of the vehicle indicated the presence of potentially hazardous material on board, prompting the State Police bomb squad to evacuate the area.

The vehicle in question is reportedly a moving truck.  Law enforcement has established a perimeter around the vehicle which at some point throughout the investigation was expanded dramatically.  Soon thereafter, it was reported that the State Police called in the FBI and have established joint communications through a fusion center.

Fusion centers operate in largely populated areas to serve as a focal point for the gathering, assessment, and sharing of pertinent information regarding such threats.  They are designed to streamline communications between “federal; state, local, tribal, territorial (SLTT); and private sector partners.”

HAZMAT is reportedly on scene and preparing to address any potential threat.  It is possible that the increase in the perimeter could have been precipitated by the identification of whatever the threatening substance may be – as it may not be a concern over an explosion, but rather the dispersal of the substance.  Thus far, there has been no formal acknowledgement from law enforcement regarding the nature of the substances identified.