A Code Blue announcement provides an immediate security awareness alert to all airport workers that a security concern is perceived by another airport worker and the report is being investigated.
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Travelers would be classified into one of three groups: green for good to go, yellow for investigate further and red for stop from flying.
Former pilot Bubb told Newsweek that two dings mean the plane is climbing through 10,000 feet and/or the pilots are asking flight attendants to prepare the cabin for landing. A whoosh sound means the landing gear is extending in preparation for landing, Bubb added.
This is the abandon ship signal used at Celebrity Cruises. Kilo, Kilo, Kilo on Royal Caribbean is a general signal for crew to report to emergency stations. Mr Mob means man overboard. Man overboard can also be signaled with three prolonged blasts on the ship's whistle and general alarm bell (Morse code Oscar).
What does Mike mean on a cruise ship? The code “Mike” is used by the cruise line Oceania Cruises to communicate to the crew that there is a medical emergency on board that requires urgent attention. Therefore, the code “Mike” performs a similar function to Alpha, but on Oceania Cruises only.
On a cruise (and sometimes also on land) 'pineapple' is code for swinging or wife-swapping. If you see pineapple on a cruise ship door it means the people are up for meeting other couples for 'adult fun'.