He (Cooper) does maintain his innocence and will defend himself in court if indicted.

It is my practice that if a person is identified as a potential target witness or suspect, that unless I have some assurance in some way the government is not in any way attempt to prosecute them, then I instruct them they have a privilege under the Fifth Amendment not to give testimony.

You do not be a victim of a gang rape and then go to a football game and cheer them on.