The failures that led to this crisis require bold action.

Major failures have required hundreds of planes to wait for long periods, in holding patterns or at airports.

These failures will require welding or other repair methods and perhaps parts replacement.

In summary, response to therapy may be incorporated in a definition when it works but failure requires other ways of thinking.

Each failure dumps all the water in the system and requires another full wash sequence.

For other services, failure is less expected and may require changes to application code.

Such a failure can require complete replacement of the expensive central unit.

A failure to arrest the station's increasingly unstable movements would almost certainly require evacuation.

Once again we note that the failure of each market to clear requires a quantity trading rule for each.

This failure required the ship to surface though the ice.