There were only a couple of days' breathable air left in the day tanks, and no food at all.

We'd need to find a source of breathable air, and fast.

At least they didn't have to worry about breathable air and other environmental factors.

Six months at least you would need before harmless and easily breathable air once more became available.

His hands could touch the breathable air on the other side, but that was all.

His head came out of the white stuff and he gasped in breathable air.

It took more than breathable air to keep men alive.

A hot one, but breathable air and a solid surface.

Not the best quality of breathable air, but it'll do.

And it forces you to go down to the floor, where any breathable air is going to be.