Mavis Wanczyk, right, of Chicopee, Mass., laughs beside state treasurer Deb Goldberg during a news conference where she claimed the $758.7 million Powerball prize at Massachusetts State Lottery headquarters, Thursday, Aug. 24, 2017, in Braintree, Mass. Officials said it is the largest single-ticket Powerball prize in U.S. history. At left are Wancyk's mother and two sisters. (AP Photo/Josh Reynolds)