21.   More than an hour elapsed before the first rescue crew arrived.

22.   National law-enforcement experts say tensions often occur when rescue crews are working simultaneously with criminal investigators.

23.   Now rescue crews in moon suits are rushing into office buildings to investigate suspicious letters that could contain anthrax.

24.   On Mount Rainier, rescue crews tried to piece together what may have happened.

25.   Rescue crews continued searching for dead or injured Tuesday.

26.   Rescue crews inside removed their hard hats, bowed their heads and prayed or reflected on the past week.

27.   Rescue crews reached Alice only after nine hours of desperate digging.

28.   Rescue crews used diamond-chipped buzz saws to slice through the rubble, fearful to use acetylene torches because of fear of flammable gas.

29.   Rescue crews usually must clear debris by hand, often pausing to add metal braces to prevent cave-ins.

30.   Rescue crews continued to help people out of flooded houses and apartment buildings even as the water level dropped.