Dunstable firefighters were dispatched to a brush fire in the rear of 79 Hollis St on 4/10/21. The first arriving officer struck a 2nd alarm for a large area of brush burning behind 3 houses with a shed involved and exposure to a large garage. Due to the rapidly changing fire conditions, command struck a 3rd alarm bringing in multiple mutual aid tankers and forestries from MA and NH. Crews remained on scene for 5 hours for extensive overhaul. The District 6 fire control arrived on scene and reported the fire to be 4.4 acres. Shortly after sun down crews exited the woods.