For a secret installation, they would not build access roads.

It was now a secret military installation, but we got pretty close, at the top of the hill.

The gates to some of Iraq's most secret installations opened on the inspectors' demand.

During WW2, a secret military installation was said to exist in this area.

There's a path we can take that goes near no secret installations.

They're saying something about finding secret installations buried under these three Church temples.

Being so close to a secret military installation and all.

Is there a secret installation, and if so, where is it?

They will place you in the very midst of their secret installations.

Again his job as a health physics officer gave him wide access to the secret installation.