Six people have been killed after a sightseeing plane crashed in southeast Alaska on Aug.5, the U.S. Coast Guard said. The plane’s emergency alert beacon was activated at around 11:20 a.m. when the plane crashed in the area of Misty Fjords National Monument, near Ketchikan, the Coast Guard said in a statement. The Coast Guard, Alaska State Troopers, U. S. Forest Service, and Ketchikan Volunteer Rescue Squad (KVRS) responded to the incident, eight miles northeast of Ketchikan, Alaska, on Thursday. An MH-60 Jayhawk helicopter crew from Coast Guard Air Station Sitka located the wreckage at 2:37 p.m. and lowered two rescue swimmers who reported no survivors, the Coast Guard said. The Coast Guard discovered the crash site in “a steep mountainous area,” the Alaska Department of Public Safety said in a statement. The five passengers were Holland America Line cruise passengers, the cruise line announced on Twitter. The pilot of the plane was …