1.   Police divers conducted several sweeps of the bus, which they entered through a roof hatch, in an effort to locate any additional victims.

2.   Sievers escaped through the roof hatch and later was flown by helicopter to Maricopa County Hospital, where he was listed in stable condition.

3.   Smoke, rising through a roof hatch, is swept away in the stiff wind.

4.   Officials later said both the cell door and the roof hatch he slipped through were faulty.

5.   Some of the passengers in the derailed cars had scrambled out of windows and roof hatches to escape.