The LSO Exhibit is dedicated to one of the most important crewmen aboard an aircraft carrier, the Landing Signal Officer. Responsible for making instant judgments, LSOs direct aircraft landing aboard ship, and often know more about what's happening with an approaching aircraft than its pilot. The LSO can tell at a glance whether a plane's approach is too high, too low, too fast or too slow, and despite advances in technology (examples being the Optical Landing Systems on display), the LSO still monitors and guides each landing and is responsible for calling wave-offs when an aircraft has entered a dangerous situation.