Six people were unaccounted for Monday and 10 others were injured after two floatplanes carrying cruise passengers taking part in shore excursions collided in mid-air over Southeast Alaska, officials said. Federal Aviation Administration (FAA) spokesman Allen Kenitzer told The Associated Press that the planes collided near the town of Ketchikan under unknown circumstances. Coast Guard Petty Officer Jon-Paul Rios told the AP one of the planes carried 11 people and the other plane carried five. He added that the 10 injured were from the first plane and the 11th person was among the missing. All five people on the second...