Airline "code words" are specialized terminology used by crew and pilots to communicate clearly and subtly. "All Call" or "Cabin Crew, All Call" is a command for all flight attendants to pick up the interphone to verify that doors are armed or disarmed for departure or arrival. "Crosscheck" is a directive for one attendant to verify the work of another (usually that a door's emergency slide is correctly set). If you hear a pilot mention "Miracle Flight," it’s a cynical term for passengers who required wheelchair assistance to board but "miraculously" walked off the plane on arrival. "Deadhead" refers to an airline employee flying as a passenger to reach their next work assignment. "Bulkhead" refers to the wall separating different sections of the cabin. Pilots use "Flight Level" (e.g., FL380 for 38,000 feet) to denote altitude and "Final Approach" for the last segment of the landing path. Other subtle terms include "Equipment Change" (a different aircraft type), "Ground Stop" (air traffic control halting departures), and "Air Pocket" (a gentler way of saying turbulence).