In 1980, EES developed a TEMPEST-approved version of the Apple II Plus for U.S. Army FORSCOM, and used it as a component in the earliest versions of the Microfix system. Fielded in 1982, the Microfix system was the first tactical system using video disk (Laserdisk) map technology providing zoom and scroll over map imagery coupled with a point database of intelligence data such as order of battle, airfields, roadways, and bridges. President Ronald Reagan's Strategic Defense Initiative resulted in the largest research contract in Georgia Tech's history in 1985. The $21.3 million contract (equivalent to $ million in ) was divided between GTRI and the School of Electrical Engineering. GTRI landed its own largest-ever contract in 1986—$14.7 million (equivalent to $ million in ) to create a Soviet surface-to-air missile system simulator. In 1989, as part of a project with the U.S. Army, and using technology it had been developing since the late 1960s, GTRI completed the largest outdoor compact antenna range at Fort Huachuca, Arizona.