Unmanned underwater vehicles (UUV) to Argentina Operators aboard the Australian navy vessel ADF Ocean Shield move a U.S. Navy Bluefin-21 unmanned underwater vehicle into position for deployment in the Indian Ocean, April 14, 2014, during the search for missing Malaysia Airlines Flight 370. The Navy is employing a smaller, deep water version of this UUV -- a Bluefin-12D -- in the search for missing Argentinian navy submarine A.R.A. San Juan. Navy photo by Petty Officer 1st Class Peter D. Blair SHARE: Download: Full Size (0.61 MB) Credit: MC1 Peter D. Blair VIRIN: 140414-N-OV358-036.JPG Photo Gallery