You aren't from their world, so when you came into their world you decided to join the TF using fake documents, which they believed.

You have been in the TF for years now and had become a trusted member of the TF. However you made a mistake and they found out that your documents were false.

Which Is why you're now in a room being interrogated by your 'teammates'. Price slams your files on the table. "Care to explain?" He asks sternly.