Keywords: Flickr - Official U.S. Navy Imagery - Sailors assigned to a Portuguese submarine climb down to their submarine after mating with a U.S. submarine rescue vehicle.jpg MEDITERRANEAN SEA June 3 2011 Personnel assigned to the Portuguese navy submarine SKS Tridente S 70 climb down to their submarine after mating with the Deep Submergence Unit submarine rescue vehicle during the NATO exercise Bold Monarch 2011 Bold Monarch is the world ™s largest submarine rescue exercise with participants and observers from more than 25 countries The 12-day exercise supports interoperability between submarine rescue units U S Navy photo by Mass Communication Specialist 2nd Class Ricardo J Reyes/Released 110603-N-EC642-399 http //www flickr com/photos/usnavy/5804947098/ Sailors assigned to a Portuguese submarine climb down to their submarine after mating with a U S submarine rescue vehicle 2011-05-31 14 02 http //www flickr com/people/56594044 N06 Official Navy Page from United States of America MC2 Ricardo J Reyes/U S Navy Attribution License IPTC Source Navy Visual News Service PD-USGov-Military-Navy Official U S Navy Imagery http //flickr com/photos/56594044 N06/5804947098 2012-11-15 00 41 13 cc-by-2 0 Images from United States Navy to check |