Hawaii Air National Guardsmen evaluate network vulnerabilities during the Po’oihe 2015 Cyber Security Exercise at the University of Hawaii Manoa Campus Center Ballroom, June 4, 2015. Po’oihe is part of the hurricane preparedness exercise Vigilant Guard/Makani Pahili 2015 hosted by U.S. Northern Command, the National Guard Bureau and the Hawaii Emergency Management Agency. Hawaii Air National Guard photo by Airman 1st Class Robert Cabuco