Actually, it's the planetary defense centers that worry me most, but Geb's on that.

With little but the details in dispute, his defense centers on his state of mind.

These boards supervise operations from more than 100 civil defense centers designated throughout the country.

The base was decommissioned in the mid-1960s and used for various functions, including a civil defense center.

I've got to play tour guide, showing all sorts of vips around the defense center.

There's a problem with the heavy grav-guns going into the planetary defense centers.

In one day better than half of the planetary defense centers under construction had been totally destroyed.

It is also a major defense center and amateur athletics center.

The 911 AW hosts an average of 20 military flight operations per day in its role as host to the region's defense center.

The energy barrier barring the entrance to Karnak's defense center flickers green as she passes through.