In this photo taken Tuesday, April 23, 2013, fans have their backpacks searched by security personnel prior to entering AT&T Park for a baseball game between the Arizona Diamondbacks and the San ... more 
In this photo taken Tuesday, April 23, 2013, fans have their backpacks searched by security personnel prior to entering AT&T Park for a baseball game between the Arizona Diamondbacks and the San Francisco Giants in San Francisco. Major League Baseball's previously scheduled security meeting in New York took on added importance in the aftermath of the marathon bombs. Each team sets its own security standards, although clubs might consider cutting the size of the general major league limitation on bags from 16x16x8 inches to something less. (AP Photo/Ben Margot) less 
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Associated Press | Photo By Ben Margot
Fri, Apr 26, 2013 3:30 PM EDT