I worry that there could be a failure in the equipment, or some unforeseen emergency.

Barring some unforeseen emergency, the ship would fly in an air line to Duhor and stop above the city.

You did exactly the right thing in dealing with an unprecedented and unforeseen emergency.

People would receive government coverage for truly catastrophic, unforeseen medical emergencies and procedures, such as those costing more than $50,000.

Pilgrims should bring sufficient funds to cover any unforeseen emergencies.

He told her where he could be found if an unforeseen emergency required Sato to get in touch with him.

She had taken a supply of the special pink scrubbing leaves with her in case of some unforeseen emergency.

This demanded a much higher level of taxation and less flexibility in raising money to deal with unforeseen emergencies.

Along with these implements, he had two of Colt's six-shooters, for unforeseen emergencies.

So I do not believe it is necessary to have large sums in reserve at all times to meet possible unforeseen emergencies.