直升机在行动 Straight Up: Helicopters in Action

Agusta 109K2: Alpine Medivac Rescue
　　Straight Up's exploration of vertical flight begins with a high-impact alpine rescue amid an avalanche. The dramatic opening sequence documents the dangerous work of the Rega mountain rescue team and the invaluable role of the Agusta A109K2 helicopter in saving lives and minimizing injuries.
　　As the camera pans over beautiful vistas of the snow-covered Swiss Alps, it cuts to a cornice, as a chunk of snow breaks free, triggering an avalanche. The tranquil scene is shattered as the avalanche thunders down the mountain slopes. With terrifying speed, it heads straight for a mother and child trapped in their car, wheels spinning on the icy road.
　　The mother calls for help on her cell phone, and a second call from a snowplow prompts radio dispatch. The Rega mountain rescue team already is airborne en route to the scene, the red cross painted on the helicopter's white underbelly signaling that medical help is on the way. The mother escapes, but her son is missing. Within minutes of the helicopter landing, the rescue team dig out the car, extract the trapped boy, apply first aid, and airlift him and his mother to safety.
　　A significant mountain hazard, avalanches are responsible for many deaths each year. Time is of the essence in avalanche rescue work. A person has a 90 percent chance of survival if found within the first 15 minutes, but one's chances of survival diminish with each passing minute. Not only do helicopters provide quick access for rescue teams, they also provide a lifeline to medical care. Flying the injured to the nearest hospital as rapidly as possible is not the only type of rescue operation; often helicopters bring the hospital to the injured, who receive treatment at the scene.
　　The powerful avalanche was shot in British Columbia's Selkirk Mountains under the supervision of the Canadian Avalanche Association. The CAA controls avalanche risk for the safety of heli-skiers. To capture the avalanche head-on, avalanche expert and filmmaker Steve Krochel and David Douglas developed a quarter-inch-thick steel container for the IMAX camera, which was equipped with a triggering device and a beeper so that the camera could be found once the avalanche had swept it down the mountain.
　　The rescue was completed in Switzerland's Bernina Pass near the Italian border. Filming the Rega rescue helicopter air-to-air sequence turned into an international excursion as Douglas chased the sunlight over Italy in one direction and in Austria in another before setting down in Switzerland. In another dramatic shot, Douglas centered the red cross in the crosshairs of the camera lens as the craft descended. To facilitate this shot, Douglas dug a hole in the snow large enough to accommodate himself and the IMAX camera. Inside the hole, 3 feet below the helicopter, he filmed its takeoff.
　　According to Douglas, "The helicopter is the instrument of rapid response to natural physical and social disasters around the world, alleviating human suffering on a major scale. For the individual caught beyond the limits of training or equipment, often the last chance for survival is the hope that a helicopter will get to them in time. "
　　The Pitcairn PCA 2, "Miss Champion"
　　For centuries humans dreamed of flight. The Chinese, in the 12th century, de