Article Photos: C. Guard guns sink ship adrift since Japan tsunami 1/6

  Coast Guard Petty Officer Charly Hengen, aboard a C-130, watches a giant plume of smoke rise from a derelict Japanese ship after it was hit by canon fire by a U.S. Coast Guard cutter on Thursday, April 5, 2012, in the Gulf of Alaska. The Coast Guard decided to sink the ship dislodged by last year's tsunami because it was a threat to maritime traffic and could have an environmental impact if it grounded. (AP Photo/Mark Thiessen)