OK how about this: The old man needs to do contract work out of town because startup money was not there. While he is gone his young adult sons open the shop doors, man the phones, receive materials and perhaps do sign work like cut materials, paint boards, plot vinyl etc. Dad told them his friend will be bringing the sign he (Dad) made for the shop (at his job) and will be installing it. So when AMS showed up the sons thought he was their guy with their sign. Because they are young and exited about the business, they approached AMS before scoping out his truck.