The inevitable Carnival cruise lawsuits continue. A couple is suing the company over the Triumph voyage that was disabled by a fire, resulting in a days-long, less-than-hygienic slog to shore. Matt and Melissa Crusan are aiming for a class-action suit, a status that must be backed by a judge, the AP reports. Their action comes after passenger Cassie Terry filed a suit of her own within 24 hours of the boat's arrival in Alabama. Carnival rules say suits must be filed in Miami. Such cases can prove challenging for plaintiffs, who have to demonstrate illness or injury to win, lawyers say.