02/14/22 Hamden, CT - Numerous calls were received for a fire at 42 Warner St. A second alarm was transmitted while enroute by the battalion chief due to the calls received, high occupancy and size of the structure. Rescue one arrived reporting a large apartment complex with heavy smoke showing. Heavy fire was through the roof as companies arrived. There was a severe water supply issue, prompting a delay in water. This prompted a third alarm to be transmitted by Chief of Department Merwede. Crews from North Haven, Wallingford, Cheshire, and New Haven were called in on mutual aid. The fire rapidly extended throughout the complex prompting a defensive firefight in the cold conditions. The fire took three ladders, a deck gun, multiversal and multiple handlines two and a half hours to bring the fire under control. Crews would remain on the scene throughout the night dousing hot spot. The cause of the fire is being investigated. Over forty residents were displaced.