Among the open questions is why it took 11 hours to attempt a rescue.

"Even more to the point - what might happen to us if we attempted a rescue?"

And the experts say it's not too late to attempt a rescue.

The plain would have been a perfect place to attempt a rescue had they arrived an hour or two earlier.

He was one of the very few who intentionally left that safety to attempt a rescue.

We hear your distress signal and will attempt a rescue.

Do not attempt rescue until you hear from me.

If you attempt a rescue, she may be killed.

Soon they return underground to find his father and attempt a second rescue of Chester.

"And let us get clear before his men know of this and attempt a rescue."