The Zippo lighters are shared unfairly. American soldiers use "Black Crackle" shipped by Georges Blaisdell to the P.X and the French few Japanese copies; but since 1946, nickel silver and later the Korean war lighters. Even for the non-smoking warfare fighter needed a strong and reliable lighter, which would light at all times. During the siege of Dien Bien Phu, American aviators from the Gia Lam and Bach Mai airline bases near Hanoi have given Zippos to the Dakota's French pilots and to the technicians. Those lighters were then traded with foreign legion soldiers.