1.   But if the choppers took a pounding, the ground troops also suffered.

2.   Johnson wanted to win the war without sending in American ground troops.

3.   Send ground troops to enforce - not just oversee - a peace?

4.   The advancing ground troops were provided with substantial air support.

5.   The air force created airborne units versed in machine-gun strafing and rocket-launching operations in support of ground troops.

6.   The mock load could be ammunition or supplies for ground troops ... or emergency aid for refugees.

7.   The scouts or the ground troops would find the enemy or be in contact.

8.   They also wanted to show their troops that they were part of the battle and supported the ground troops with our firepower.

9.   The president said he had no intention of deploying ground troops.

10.   Bombers were called in to support the ground troops.