you're the driver for a limo service and you drove o.j. simpson to the airport at a particular time. and it's very important to the investigators to know exactly what time you picked up o.j. that's all they want to know. they are not investigating anything about you, the driver. they just want to know what time you picked up o.j. that's the most innocent status, witness. subject is the middle status. subject is more than a witness. subject is someone whose conduct is being investigated, but at this time is not apparently guilty of a crime. but subject is a very dangerous status because when subjects go in to testify under oath, they sometimes become targets. because they end up giving prosecutors the kind of information that changes their status from subject to target. they could also instantly become targets of perjury investigations if they don't tell the truth under oath. so you don't ever want to hear that you are a subject of an