21.   Juppe has suggested in the past that he sees diplomacy as useless in the Balkans if it is not backed by force.

22.   Measurements that researchers had thought would help predict when a storm system was about to spawn a tornado turned out to be useless in some cases.

23.   Modern high-tech tools proved useless in rediscovering the entrance, he said.

24.   New airport security measures are useless in deterring terrorist attacks on U.S. airliners, some air safety experts said Thursday.

25.   Now they lie useless in the front yard, tossed out with the rest of the burned furnishings.

26.   Over hundreds of thousands or millions of years, their eyes proved useless in the dark.

27.   Problem is, the back of its housing is open, so it is useless in that regard.

28.   Prosecutors contend that they are entitled to conceal the existence of a wiretap if revealing it would render it useless in another investigation.

29.   Revealing the inner workings of the technology, Wigler has argued, would render it useless in future investigations.

30.   Ruiz, though, knows too well that persuasion might sometimes be useless in tax matters.