1.   The country has responded to threats of invasion by strengthening its defenses.

2.   And McDonald, a Vietnam veteran, said he wanted to strengthen national defense.

3.   He said he also worked behind the scenes to talk with cabinet members about the investigation and ways to strengthen national defense.

4.   He said bipartisan efforts helped produce a number of measures that strengthened defense, modernized the banking industry and improved education.

5.   His research showed how white blood cells use oxygen to strengthen their defenses against bacterial intruders.

6.   In strengthening defenses against terrorism, great care must be taken to strike a balance between security and freedom.

7.   Jim Thome moves to first base, making room for Williams at third, strengthening the defense.

8.   Most important, they can also strengthen their defenses against competition by offering special cluster-wide advertising deals to big advertisers.

9.   Republicans have made their job tougher by pledging to keep Social Security off-limits and to strengthen national defense.

10.   The government cut taxes and strengthened defense, but ran up a massive debt.