21.   The system performed as intended when the Atlantis crew fired it after reaching orbit.

22.   They indicate that European health systems are generally performing best and that the United States is lagging behind, largely because of inequal distribution of health care services.

23.   While the public health system performed well in many regards, officials point to several key missteps.

24.   An experimental cruise missile defense system performed perfectly during a four-day exercise against a simulated terrorist attack, an Air Force general said Wednesday.

25.   If not, officials would have to deduce what happened by studying how other systems performed before the crash.

26.   Leong added that the system also performs high-speed printing for high volume materials, using its laser printer.

27.   Most of the time, for most people, such systems will perform as promised.

28.   Six other major IBM systems are performing without a hitch at the Olympics.

29.   Still, banks will be watching closely to see how their computer systems perform this week.

30.   The Federal Reserve will continue to keep tabs on banks and other financial institutions to see how their computer systems are performing, Fed spokeswoman Rose Pianalto said Sunday.