The National Guard training yard is a multi-building compound that served as a training facility and armory for the Massachusetts National Guard before the war. However, she was attacked and killed by the feral ghouls that resided in the facility. Paladin Brandis and Scribe Faris left to go to the Revere satellite array, leaving Knight Tara Astlin alone to defend the position. In 2284, after being ambushed by unknown assailants in a ruined clinic and losing the rest of their squad, the three survivors of Recon Squad Artemis took refuge in the facility. As the crowds dispersed and the wasteland crept in, automated turrets and mines protected the facility and mostly consolidated the feral ghouls, even two centuries after the war. However, the efforts proved in vain, as the soldiers were unable to control the crowd, which rushed the building and violence ensued, culminating in the tipping of an evacuation Vertibird parked on the helipad. The military attempted to impose a semblance of order, setting up checkpoints and strongpoints to contain the terrified civilians that swarmed the facilities. The Great War strongly affected the facility, following the arrival of refugees from the greater Boston area.

The facility was expanded in 2077 to include sizable barracks, administrative and recruitment offices, an obstacle course, an armory with power armor maintenance facilities, and even its own dedicated plutonium well for energy independence. This training yard was used by the 101st Field Artillery Regiment, 1st Battalion.

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