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"In 1975, I finished up in Lynbrook High School in the mornings, and attended DeAnza Junior college in the evenings. In the afternoons and following school, I worked at NASA-Ames Flight Systems Navigation (FSN) branch for Leonard McGee, who loaned me out at times to various projects to 'fight fires'.
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Leonard was working on an elaborate program called VSTOLAND, which was involved with the XV-15 Tilt Rotor program. A simulation of the navigational software that would combine inertial guidance and VOR/DME navigational aids,
its Kalman Filtering would be subtracting out modeled error for a better fix. Numerical glitches in floating point often
created interesting surprises in the statistics used to do this, so going from a IBM 360 (base 16 exponent - see computer below) to a CDC 7600 (binary exponent - see computer above)
had interesting effects in the numbers."
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