Silent Heroes: Downed Airmen and the French UndergroundIn the early years of World War II, it was an amazing feat for an Allied airman shot down over occupied Europe to make it back to England. By 1943, however, pilots and crewmembers, supplied with "escape kits," knew they had a 50 percent chance of evading capture and returning home. An estimated 12,000 French civilians helped make this possible. More than 5,000 airmen, many of them American, successfully traveled along escape lines organized much like