Sailor Gets 5555,555As Refund by MistakeSAN DIEGO, May 25 (AP)—A Navy fireman has just been informed that a Federal income-tax refund check for $555,555.55 arrived by mail at his home.A naval information officer hastened to explain to the 18-| year-old sailor of Dunkirk, N. Y.,! that it no doubt was all a mistake.The sailor had expected a refund of about $20 and tax autho-: rities confirmed the larger sum was an error.