US Navy 110531-N-BA263-039 Royal Australian Navy Lt. Cmdr. Joel Hissink, right, discusses a patient's status with Israeli navy Lt. Cmdr. Roneu Bar

MEDITERRANEAN SEA (May 31, 2011) Royal Australian Navy Lt. Cmdr. Joel Hissink, right, discusses a patient's status with Israeli navy Lt. Cmdr. Roneu Bar, center, while Canadian navy Lt. Cmdr. Charles Cross and Capt. Ken Bradshaw observe during a simulated mass casualty drill specific to submarine injuries during Bold Monarch 2011. Participants and observers from more than 25 countries are taking part in NATO exercise Bold Monarch 2011, the world's largest submarine rescue exercise. This 12-day exercise supports interoperability between all submarine rescue units. (U.S. Navy photo by Chief Mass Communication Specialist Kathryn Whittenberger/Released)