ground radars. V/STOL Vertical/Short Takeoff and Landing. vane A flat or curved surface exposed to a flow of air, so as to be impelled to move or to rotate about an axis to redirect the flow (as in a turbine) or itself to be the impeller. vectored thrust See thrust vectoring. vertical velocity The sink or climb rate of an aircraft. vulture's row Slang for the observation deck on an aircraft carrier's island, from which flight operations can be seen. Warsaw Pact The Soviet bloc counterpart of NATO. wave off A signal from the landing signal officer ordering a pilot to abort a landing attempt on an aircraft carrier. Compliance by the pilot is mandatory. white shirt A deckhand responsible for inspecting aircraft about to be launched from an aircraft carrier. whiteout The inability to distinguish colors during the initial stages of a blackout. (See blackout.) wild weasel A method of hunting surface-to-air missiles by using one's