The ATF is one of several agencies investigating weekend fires at the Playland Castaway Cove in Ocean City and a recycling plant in Passaic. Rides at the park were spared in Saturday morning's fire but the fire damaged the park's huge ship and parrot and three business offices. The fire also tore through Hamburger Construction Co., Dairy Queen and BrumeJuice, according to Brian Hartley, vice president of Playland Castaway Cove. The ATF's involvement is not unusual for large fires, according to ATF spokesman Dylan Wiggins, who said a team was also deployed to Friday night's fire at the Atlantic Coast Fiber plant in Passaic.