But these volunteers know they are only here for a short time, so they give us 250 percent.

Some volunteers at the orientation already knew one another from local Republican clubs.

The volunteers know they have to tolerate some complaining, some "smart talking."

And the volunteers know that the work is risky.

In particular, he said, the foreign medical volunteers did not know how to treat children with severe diarrhea.

So far as the staff and volunteers know, their layout is one of only two in the world linked to the Internet.

Years later, a volunteer at the institution recognizes David and knows of his musical talent.

The volunteers do not know the goals or conditions of the experiment.

"More volunteers than I know what to do with, Ram."

But the 30 staff members and 1,100 volunteers involved in the walk know what to expect and how to manage a crisis.