Brentwood NY ..A woman and child narrowly escaped an apparent explosion possibly from a faulty propane tank .Neighbors say they heard an explosion and saw heavy smoke and flames . Firefighters arrived to a fully engulfed second floor and rear of home which quickly spread, Firefighters made a quick entrance in thru the front door and were called out of the building as the second floor was starting to collapse ,The fire was raging thru the roof and this point and the chief change to exterior ops, Firefighters fought the blaze with help from neighboring departments for about hour before bringing the blaze under control .The fire is under investigation and no injuries were reported