Auburn, NH - AFD was called for alarms sounding at 5 Dartmouth Drive a 3 story office building. Upon arrival there was a smoke condition on the top floor, and alarms were sounding. It was determined a roof top unit burned out, and the smoke vented in to an unoccupied space. Smoke was evacuated, and the roof top unit was shut down. MFD and HFD responded mutual aid. ©Jeffrey Hastings/