If he is ex AAC ask him what regiment/s he served with and let us know. With gentle probing he will be all too happy to tell you - even if he not genuine. There are a few ex AAC and serving guys on here. Ask him what he did. Ask him the stations he served on. You will either frighten him or he will give you the answers that are simply checkable. We have the 'tools' if they will pardon the expression.