Petty Officer 1st Class Joshua Harsh prepares to submerge on a salvage dive. Navy Diver Petty Officer 1st Class Joshua Harsh prepares to submerge on a salvage dive at the site of the I-35 bridge collapse on the Mississippi River in Minneapolis, Minn., on Aug. 11, 2007. Harsh is attached to Mobile Diving and Salvage Unit 2 from Naval Amphibious Base Little Creek, Va. MDSU-2 is assisting other federal, state, and local authorities managing disaster and recovery efforts at the site of the I-35 bridge collapse. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 540816-V-PCU69-463.jpg Photo Gallery