Clay Yarber was on Continental Connection Flight 3407, a decorated Marine who had twice survived helicopter crashes in Vietnam but was left with a fear of flying so deep he often preferred to drive, even cross country. But Thursday, Mr. Yarber, 62, had boarded a flight from California, connecting through Newark, to visit a friend in the Buffalo area. (snip) He had received two Purple Hearts and a Bronze Star for his service in Vietnam. “He was a really great father,” said Michele Keratsis, his last wife. She said that around the time of the Tet offensive in 1968, Mr....