TIC-TAC-TOE A student from Waipahu Elementary School plays underwater tic-tac-toe with a sailor at Merry Point Landing at Naval Station Pearl Harbor, Hawaii, May 15, 2009. The Mobile Diving and Salvage Unit 1, Naval Station Pearl Harbor, and the National Park Service hosted 350 students during the school's first historical tour of Pearl Harbor. The sailor is assigned to the Mobile Diving and Salvage Unit 1. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 211639-C-JJV30-180.jpg Photo Gallery