Nothing short of desperate emergency could make them risk aborting the mission by calling for help.

We won't use radio until we are over the horizon - unless it's a desperate emergency.

If you should get involved in a fight-God forbid-forget about weapons except in a clear and desperate emergency.

But the lessons of the classroom had not been designed for desperate emergencies.

K.15, on the other hand, found that his mind worked better in such a desperate emergency.

An anaphylactic reaction was a desperate emergency, and delays could prove fatal.

In case of desperate emergencies.

If there was a desperate emergency you could find the money from other sources.

Particularly when it was a desperate emergency.

Not when a desperate emergency requiring a nonexistent garrison to report for duty was so probable.