DALLAS -- Army and Air Force Exchange Service shoppers will have a shot at winning a $500 shopping spree or a Yeti cooler this month courtesy of the Exchange and Pepsi.From October 17-31, authorized shoppers can enter at any Exchange store for the chance to win one of 10 $500 Exchange gift cards or one of 10 Yeti coolers valued at $400."Who couldn't use a $500 shopping spree or a durable Yeti cooler?" said the Exchange's Senior Enlisted Advisor, U.S. Air Force Chief Master Sgt. Sean Applegate. "Authorized shoppers need only visit their nearest Exchange, fill out an entry form and drop it in the box for a chance to win."Winners will be picked by random drawing on or around Nov. 28. No purchase is required to enter. Entrants must be 18 or older with a valid driver's license.To find an Exchange location near you, visit www.shopmyexchange.com/ExchangeStores.