Just before 1900 on May 20th #Engine332 was alerted to respond for the reported house on fire in the 4400 block of Cape Cod Circle on box 18-08. While enroute PSC advised units they were getting multiple calls and reports of people trapped. Engine 332 operated as third due engine. Volunteer Duty Chief B (Riley) arrived to find a 2 Story middle of the group townhouse with fire showing. The engine from 33 operated for 2 hours before returning to service. All occupants made it out of the house prior to the arrival of the fire department : WUSA 9 sky9