This is an imaginary situation, but it may be interesting deciding what you would do.

The situation:
You are in the West, and there is a huge flood in progress. Many homes have been lost, water supplies compromised, and infrastructure destroyed.

Let's say you're a photographer out getting still photos for a news service, traveling alone, looking for particularly poignant scenes.

If you were to stumble across Olusegun Obasanjo struggling to keep from being swept away in a raging river and you had a choice of rescuing him or getting a Pulitzer prize-winning photograph of the death of a President, what shutter speed would YOU use?