base ****
base of operations

"We cannot let him get close to our base of operations."

I'm also going to need a base of operations once we get there.

Rather than find a new base of operations, I decided to travel.

Why don't you stay here a while and make this your base of operations.

The organization has long been looking for a base of operations.

"We must have arrived at our major base of operations."

They must have another base of operations we don't know about farther east.

That would give him a new base of operations from which to work.

You're a Western man, and for the most part, this area will be your base of operations.

The car was to serve as a base of operations and could be abandoned at any time.