So although White House officials have publicly pledged to help investigators, there is some resistance just beneath the surface.

No officers who were in Washington have come forward so far to help investigators.

She provided the seat locations of the hijackers, which later helped investigators to determine their identities.

In the days after the killings, they worked round the clock helping law-enforcement investigators from around the state with their work.

A network of anthropologists is available to help investigators and agencies that may not have these professionals on staff or access to those services.

But can these amateur sleuths help criminal investigators, or are their discussions mere white noise?

Nine of the 16 people indicted in the Whitewater investigation have pleaded guilty before coming to trial and agreed to help investigators.

He has been helping investigators, who have used his descriptions to produce a sketch of one assailant.

The statements were recorded by another neighbor wearing a hidden recording device to help investigators.