A group of passengers suing Carnival Corp. for damages after sailing on the ill-fated Carnival Triumph cruise ship that drifted at sea for days are asking the company to pay $5,000 a month for the rest of their lives for ongoing medical and mental problems. The case stems from the February 2013 incident when a fire broke out in the ship’s engine room during a four-day cruise, leaving the ship without engine power and most of its electricity, forcing passengers to endure human waste running down hallways, limited water supplies, noxious odors and extreme heat. …