1.   At least two men overpowered the driver in a secure terminal area, British police said.

2.   Passengers on a Greyhound bus were credited with averting disaster after they helped thwart an alleged hijacker who tried to overpower the driver and threatened to flip the vehicle.

3.   The two men, one armed with a knife, overpowered the driver, who was not injured.

4.   Prisoners in one bus overpowered the driver and took weapons from their guards, local officials said.