Maia Frieser, of New York, acts during a "zombie apocalypse" exercise, which included students dressing up as the undead, on the University of
Maia Frieser, of New York, acts during a "zombie apocalypse" exercise, which included students dressing up as the undead, on the University of Michigan campus in Ann Arbor, Mich. Tuesday April 23, 2013. The exercise was designed to get School of Public Health students thinking about what the appropriate response should be during a disaster. ((AP Photo/Paul Sancya) )