Flight attendants only "stay on the plane" during short turnaround periods between flights, known as "ground time." During these 30–60 minute intervals, they assist with boarding, security checks, and cabin readiness. However, for overnight stops or long layovers, flight attendants leave the aircraft and stay in hotels provided and paid for by the airline. They do not sleep on the plane while it is parked at the gate. On ultra-long-haul flights (typically over 12 hours), the aircraft is equipped with a hidden Crew Rest Compartment (CRC). This is a small area, usually located above the passenger cabin or in the cargo hold, containing bunks and privacy curtains. On these long routes, the crew works in shifts; while one half of the team provides service in the cabin, the other half goes to these bunks to sleep for several hours. This ensures that the crew remains rested and alert for the duration of the flight and is ready to handle any emergency procedures that might arise.