11.   He is reluctant to leave, in large part because he loves being mayor and can never predict what disaster might occur in his absence.

12.   Marie Gillman, operations manager at Indian Point, standing in the control room simulator, says she will not shirk her duty if a disaster occurs.

13.   Nine months later, the Chernobyl disaster occurred.

14.   Senior officials said much of what is being ordered was under consideration even before the TWA disaster occurred, a reflection of deepening intelligence concerns.

15.   Still, natural disasters will occur, and the cost of paying off a big disaster is rising as properties become more valuable, analysts said.

16.   The initial disaster occurred under Mayor W. Wilson Goode, with repairs going on through the incumbency of Mayor Edward Rendell.

17.   The most visible disaster occurred last spring, at a revered site in the Hindu Kush mountains called Bamiyan.

18.   The search for improved security measures was under way even before the TWA disaster occurred.

19.   The West pledged huge sums to finish two replacement reactors and safeguard the lethally radioactive wreckage of the Unit Three reactor, where the Chernobyl disaster occurred.

20.   What disasters would occur if the dinosaurs escaped from the island?