First things first, like resurveying the base perimeter to include the new town.

They had to be guards brought in from patrolling the base perimeter.

Standing at the very edge of the base perimeter, he pressed against the chain lilk fence and peered in.

Hunter cautiously made his way along the base perimeter.

The bombs detonated close to the base perimeter and killed 15 Afghans.

She can cover the base perimeter with her guns if push comes to shove.

Part of the base perimeter is adjacent to the German-Dutch border.

His control systems suddenly seize up and the Eagle crash-lands just beyond the base perimeter.

"What about areas on the base perimeter with seismic activity levels well above normal?"

For security reasons, most of the personnel stayed within the base perimeter.