ABSTRACT
Anyone traveling on a passenger ight, even a frequent yer, is required to watch a short movie on safety before takeoff, which includes instructions on how to tighten the seat belt and various emergency procedures. Before each ight, pilots, even those who have completed countless ights, will discuss the ight plan, routine or not, and will subsequently check the instructions in the procedure booklet and review the procedures they are to perform, step by step. Fighter pilots receive training before each and every mission and upon return analyze the incidents that occurred and report any system deciencies. In more sophisticated systems, such as when launching a spacecraft, dozens of National Aeronautic and Space Administration (NASA) control stations operate essentially as a single unit and each station is aware of the information that each of the other stations have. Flight inspections are performed at several centers and the transfer of information between them is referred to as a Hand Out (literally: distribution).
