Nothing had changed except that I was in a red sector I'd never experienced before.

An additional red sector was later installed to show further dangerous locations.

In a red sector, he knew, evasion tactics were a waste of time.

Then why are you out here, in the middle of a red sector?

Off the plateau, it was enemy territory, a full red sector.

This was changed in 1911 to a fixed white light with red sectors.

The needle had dropped into the red sector on the gauge.

This was later replaced by a red sector on the main light itself.

I walked down the steps and into the red sector.

He never liked his people to get into a red sector.