1.   He was an outstanding fighter pilot who proved his mettle in a variety of tough assignments, including two wars.

2.   Besides, to whom must we prove our mettle?

3.   Both planes would prove their mettle against the German Messerschmitts in the skies over Europe.

4.   But Dallas proved its mettle, and showed it has experience in putting teams away.

5.   But Winfrey, all pomposity and good intentions, keeps proving her mettle.

6.   Critics have charged Bank of Japan for adjusting the rates higher out of the desire to prove its mettle and show that it will not bow to political pressures.

7.   Danielle Turnof Fox, an analyst with J.P. Morgan Securities, said the company could still prove its mettle.

8.   Eight years later, Card proved his mettle again when he helped Bush win the crucial New Hampshire primary over Sen. Robert J. Dole, R-Kan.

9.   Established companies that move from other exchanges will be able to prove their mettle alongside the likes of Microsoft and Starbucks.

10.   He had this unslaked desire to prove his mettle.