Former MTI Smith found guilty Published Aug. 2, 2012 JOINT BASE SAN ANTONIO -- LACKLAND, Texas (AFNS) -- A guilty verdict has been returned in the special court-martial of former Air Force military training instructor (MTI) Tech. Sgt. Christopher Smith. The trial will now enter the sentencing phase, which will begin tomorrow at 8:30 a.m. Tech. Sgt. Smith was found guilty of two specifications of unprofessional relationships with two basic trainees, specifically seeking to develop and conduct personal and intimate relationships with one trainee and carrying on a personal social relationship with another trainee. He was found not guilty of an additional specification of unprofessional relationship and of obstruction of justice.