From KRBD : Ketchikan police boarded the disabled Celebrity Millennium cruise ship in Ketchikan late Tuesday after receiving cellphone calls from passengers who said some aboard the ship were so angry they might riot. The ship first had problems with a propulsion system in Seward, which caused a several-days delay, then had more problems near Ketchikan. Finally, the cruise was called off, and on Wednesday passengers were boarding planes  for flights back to Vancouver, B.C., and Seattle.
Police chief Alan Bengaard [said]: “We, the police department, received three 911 calls from passengers on the MV Millennium who stated that people were getting unruly on board the ship, and they believed a riot was about to begin. Officers responded to the ship, met with ship security and advised them of the 911 calls. Ship security and officers contacted approximately 500 guests on the third floor of the vessel, and subsequently peace was restored and officers left. ...
“The officers … were given the information that some of the passengers were unhappy with the miscommunication between them and the cruise line, and ultimately where their final destination was going to be,” he said. “Initially, evidently, they were told they were going to be flown to Anchorage, and plans had changed and some were upset with that.”
Read more: Millennium passengers call 911, worried about ‘riot’