A 41-year-old cyclist was riding his bicycle on the island of Oahu an hour before dawn, training for a triathlon. As he came down a hill on the Kalanianaole Highway, he lost control of the bicycle, fell and landed on his head. Even though he was wearing a helmet, he suffered a traumatic brain...

The pilot of a Beechcraft was forced to crash-land in a vineyard because the engine came apart in cruise flight. His 44-year-old passenger suffered serious head injuries. Government investigators concluded that the engine came apart because the mechanic who performed the last cylinder change failed to tighten crucial hold-down nuts. The mechanic, who was...