KETCHIKAN, Alaska - Cmdr. Matt Jones, deputy commander U.S. Coast Guard Sector Juneau (left), and Mr. Don Rodden, Canadian Coast Guard (right), listen to a presentation about the port of Prince Rupert, B.C., expansion and the potential effects of increased vessel traffic on the Dixon Entrance trans-boundary region during the 2011 Canadian U.S. Dixon Entrance exercise at the Ted Ferry Civic Center in Ketchikan Sept. 20, 2011. The two Coast Guards hold exercises in Ketchikan and Prince Rupert to raise awareness of potential environemental threats and response capabilities in the region. U.S. Coast Guard photo by Petty Officer 1st Class Sara Francis.