Keywords: US Navy 090515-N-3666S-024 A student from Waipahu Elementary School plays underwater tic-tac-toe with a Sailor assigned to Mobile Diving and Salvage Unit (MDSU) 1 at Merry Point Landing at Naval Station Pearl Harbor.jpg en PEARL HARBOR May 15 2009 A student from Waipahu Elementary School plays underwater tic-tac-toe with a Sailor assigned to Mobile Diving and Salvage Unit MDSU 1 at Merry Point Landing at Naval Station Pearl Harbor MDSU-1 Naval Station Pearl Harbor and the National Park Service hosted 350 students during the school's first historical tour of Pearl Harbor U S Navy photo by Mass Communication Specialist 3rd Class Robert Stirrup/Released 2009-05-15 090515-N-3666S-024 Navy http //www navy mil/view_image asp id 71758 U S Navy photo by Mass Communication Specialist 3rd Class Robert Stirrup PD-USGov-Military-Navy 2009 in Pearl Harbor Images from US Navy location Pearl Harbor Hawaii Tic Tac Toe |