Howard Lincoln of White Mountain, Alaska, doesn't always hear it when people knock on his door. He's 82 and he still has a little shrapnel in his jaw from a mortar shell that nearly killed him in the Korean War 60 years ago.
"We heard it whistling, but I was the third one in line running toward the bunker," he recalls.
Wounds to his face, arm and hip laid him up in a Tokyo hospital for quite a while.