Just before 11:30 am units from Kiryas Joel FD arrived to a working fire in a multi-family 3 story apartment building. A 2nd alarm was requesting bringing R-581 as the FAST along with multiple other units in the 5th battalion. R-581 was on the road with 7 members within 3 minutes. R-581 arrived and set up on side 1 as it appeared the fire was knocked down. Shortly after unit found fire running the attic space as well as in the exposure 2 building. The Rescue's crew was split with 4 members remaining as FAST and 3 members heading inside to open up. The inside team eventually made it to the roof where the cut a large hole and opened up checking for further extension into the roof. The crew remained on scene for just under 2 hours before returning to Washingtonville.