21.   She understands the pull of this ultimate challenge for her husband.

22.   Squaring that vision with voters anxious about the security risks that come with the peace has presented Peres with the ultimate challenge of his long career.

23.   The Badwater race, an ultimate challenge without a TV contract or even water stations, called to him.

24.   The Emerson recordings stood up remarkably well to this ultimate challenge, even emerging at times with a clear advantage.

25.   The ultimate challenge NASA faces may be building a tiny computer that can psychoanalyze astronauts and keep them from going nuts.

26.   Then the holidays came and presented the ultimate challenge.

27.   The ultimate challenge may be building a tiny computer that can psychoanalyze astronauts and keep them from going nuts.

28.   They are the ultimate challenge.

29.   They view McGwire as the ultimate challenge and go right at him with their best.

30.   This would be the ultimate challenge.