Exchange gives troops a chance to win LCD HDTVs Published Oct. 27, 2010 DALLAS -- Starting Oct. 29, military shoppers can rest easy as the Army and Air Force Exchange Service teams with Serta Mattresses to give away $4,000 in Sharp HDTVs. Prizes in the Serta Sweepstakes include a 60", 52", and 46" Sharp Aquos LCD HDTV. Authorized Exchange shoppers worldwide can register at participating stores for their chance to win one of the three TVs through Nov. 11. Prizes will be awarded around Dec. 17. No purchase is necessary as shoppers need only to fill out an entry form at a participating location for a chance to win. (Courtesy of Army and Air Force Exchange Service.)