<p>Among the policies for the Pimlico race is a ban on beverages in the race's infield. Race goers also cannot bring coolers, backpacks, duffel bags and thermoses into the grandstand, clubhouse or infield. (2004 File Photo)</p><p>In the wake of the Boston Marathon bombings last month, a number of security policies will be in effect at Saturday's Preakness Stakes in Baltimore, raceway officials said.</p><p>Security agents will be wanding all attendees, with all camera bags, purses and containers entering Pimlico Race Course grounds to be searched upon entry.</p><p>Backpacks, duffel bags, coolers and or thermoses will be prohibited.</p><p><a href="http://www.nbcwashington.com/news/local/Preakness-Security-Policies-Ban-Beverages-in-the-Infield-207545751.html">Keep reading...</a></p>