You might, in an extreme emergency, wear them out of the house.

Right now we're on our own, except in cases of extreme emergency.

He was even a medical orderly at times of extreme emergency.

Such devices must never be left behind except in an extreme emergency.

He knew Steve would not leave for their own time without him except in an extreme emergency.

You should also have several manual pumps in case of an extreme emergency.

I have made plans in case of an extreme emergency.

It was used in cases of extreme emergency when we didn't want anyone to understand us.

This is an extreme emergency and we must take action against our known enemy!

It was only a safeguard in case of extreme emergency.