Helicopters are different from planes. An airplane by its nature

wants to fly and, if not interfered with too strongly by unusual

events or by a deliberately incompetent pilot, it will fly. A helicopter

does not want to fly. It is maintained in the air by a variety of forces

and controls working in opposition to each other, and if there is any

disturbance in the delicate balance, the helicopter stops flying, im-

mediately and disastrously. There is no such thing as a gliding helicopter.

This is why a helicopter pilot is so different a being from an air-

plane pilot, and why in general, airplane pilots are open, clear-eyed,

buoyant extroverts, and helicopter pilots are brooders, introspec-

tive anticipators of trouble, They know if something bad has not

happened, it is about to.