1.   But he also made occasional trips into the field to write stories for Army publications about engineering feats like the construction of new airstrips.

2.   In the exercise, images from the Landsat satellite that passes over Brazil every two weeks reveal a new airstrip cut into the jungle.

3.   The official said the American team inspected a new airstrip and will be used to carry out covert activities.

4.   With winter around the corner, supplies will become even harder to transport, and a new airstrip the northern alliance is constructing in the area is still unfinished.