"These people were won over and willing to operate against the other groups," an official said.

For a start, you learned how to operate against real, live surveillance.

The man had operated almost independently against them and won.

Finally Federal troops began operating against them with the help of the locals.

Besides," continued 32, "there is no such thing as a cover when you are operating against someone who can see the future.

There has also been concern that international trade could operate against the interests of developing countries.

"You just aren't used to operating against a professional service," Webster said.

You could operate against the main line of the railway from there.

You know, poor housing and no money are two critical factors that operate against people round here.

That type of discrimination, which usually operates against women, is difficult to prove.