Operation Brightstar designates a medical emergency, such as cardiac or stroke on Carnival and Disney Cruise Line vessels. It can only be requested to be announced by one of the medical team or an officer with advanced medical training.

On a Disney Cruise Line ship in 2026, "Bright Star" is a coded emergency signal used over the public address system to alert the crew to a medical emergency without causing panic among the guests. When you hear "Bright Star, [Location]" announced, it signifies that a guest or crew member requires immediate, high-level medical intervention, often involving the ship's rapid response medical team and the onboard physician. The use of "codes" like this is standard in the cruise industry; for example, "Operation Rising Star" refers to a death on board, while "P Alpha" refers to a fire. If you hear "Bright Star" called, the best thing a guest can do is clear the hallways and elevators in that specific area to allow the medical team to pass with their equipment. In 2026, Disney's ships are equipped with advanced medical centers capable of handling everything from minor injuries to stabilizing cardiac patients until a "medevac" (medical evacuation) by helicopter or a shoreside transfer can be arranged at the next port of call.