Originally a marketing promotion, Stettner obtained the actual vanity plate from the state of New Hampshire in 1982 after Bill Shannon left to join Sun Microsystems.
Stettner ported UNIX to DEC's symmetric multiprocessing VAX-11/782 hardware system, though based upon Purdue University's asymmetric kernel.
Stettner proposed and led DEC's VAX UNIX development resulting in Ultrix-32 and was its architect and engineering manager, overseeing the project through its beta trials.
[4] Shortly thereafter, to more effectively compete with Sun Microsystems, Stettner was part of a team of five DEC employees (with James Billmaier, Joe DiNucci, Mario Paglario, and Skip Garvin) who proposed a UNIX-only workstation product line based upon the MIPS architecture.
Armando later designed a real-time Shuttle tracking system using down-linked telemetry for Kennedy Space Center as late part of NASA's Return to Flight program.