Is there a AIT Graduation @ Ft Knox,Ky on May 7@ 10am?

My son is supposed to be grad from AIT at Ft Knox KY on May 7th. He said we would get information mailed to us. We still havent. Does anyone know if that is still scheduled? Can we get in without the Letter from the Army? Has anyone else not heard from their Soldier at Ft. Knox? I don't know what to make of it.