Early Saturday morning 4/1, just after 0500 units from Kiryas Joel arrived to a well involved apartment fire and requested a 2nd alarm. R-581 as the FAST and Car 3 (Bates) responded with a crew of 7 in under 3 minutes. Units had a large volume of fire on the top floor and through the roof of an approximately 150′ x 50′ apartment building. Shortly after R-581 arrival command ordered all units to withdraw from the building and went to an exterior attack. After master streams were put in place to know down the fire, units re-entered and began to open up. Due to the amount of fire on the top floor and the amount of opening needed an additional FAST was requested and R-581 was put to work on the top floor. Units spent 4 hours operating in the fire building and were released just after 0930.