During the Berlin Blockade, for example, pilots flying across Soviet-controlled German airspace were required to maintain very specific positioning within air corridors defined by the commander in charge of the airlift.
例如，在柏林封锁期间，飞行员跨越苏联控制的德国领空的飞行被要求在由负责空运的指挥官定义的空中走廊内保持非常具体的位置。