Three days later, he recommended Gagarin, with Titov on backup.

I shall await Redding's formal response to my report, meanwhile keeping our pharmacy on backup.

"The way things used to work, if something went down and you were running on backup, you'd have somebody trying to fix it," he said.

Back when you were flying and I was on backup, things were simpler.

They couldn't count on backup or help- they had only their wits and a tiny runabout.

But they have a thing on workflow, and particularly on backup, that's so good.

Rafe, tie the helm into your station; I want you on backup if we lose primary control.

With the station running entirely on backup, there were undoubtedly plenty of people working to stabilize systems and revise repair plans.

And you can't expect Travis to be patient and rely on backup.

With life supports operating strictly on backup, it felt cooler than usual in the corridor.