170609-N-SF508-076 NORFOLK (June 9, 2017) Navy Diver 2nd Class David Yoder, assigned to Mobile Diving and Salvage Unit (MDSU) 2, helps a visitor try on a KM-37 diving helmet at the Explosive Ordnance Disposal Group (EODGRU) 2 dive tank during the 41st Annual Norfolk Harborfest. Harborfest is America’s largest free maritime festival and is being held in conjunction with Naval Station Norfolk's 100th anniversary. (U.S. Navy photo by Mass Communication Specialist 2nd Class Charles Oki/Released)