In these outer defenses, small skirmishes were still taking place.

I had a lot of trouble getting through the outer defenses, but finally they let me into Wellington's room.

The area between the inner and outer defenses was given over to agriculture.

It also told him he wasn't far from the first of the prison's outer defenses.

Then they were starting downward, past the last of the outer defenses.

If the outer defenses work, you don't have to get involved.

Together they were the outer defense of the richest world mankind had ever built.

General, clear the Enterprise through our inner and outer defense blankets.

In other words, the city was to be stripped to man the outer defenses.

Fort Washington was garrisoned as the outer defense for the city.