Intelligent Tutoring Systems (ITSs) have emerged as a potential enhancement to training for the military, industry, business, and schools. While the ITS concept sounds good, the transition from laboratories to training centers has been slow. However, changes in software, hardware, and development approaches are making it possible to develop and deliver ITSs in a relatively short time using a reasonable amount of personnel and fiscal resources. An example of one such system is Microcomputer Intelligence for Technical Training (MITT). MITT, developed for the Air Force Human Resources Laboratory in cooperation with the NASA Johnson Space Center, provides intelligent tutoring on the diagnosis of problems with the space shuttle fuel cell system.