Many Vietnam Veterans describe the UH-1 Huey helicopter as the sound of our war. Vietnam Helicopter Pilots Association records show that 7,013 Hueys survived in the Vietnam War, totalling 7,531,955 flight hours. Over 90,000 patients were airlifted (over half of them Americans). The average time between field wound to hospitalization was less than one hour. During the Korean and World War II wars this time was measured primarily in days, not hours. The utilization of helicopters dramatically increased warfare survival rates.