My very first full-time (non-internship) professional job in the late 90's was to adapt a COTS ATM protocol stack to run on VxWorks as part of a military projec

My very first full-time (non-internship) professional job in the late 90's was to adapt a COTS ATM protocol stack to run on VxWorks as part of a military project featuring a satellite equipped HMMWV to provide connectivity. Part of that job was a three week trip to Alameda, CA for training and certification on VxWorks. In general, the software worked as expected, and did what a RTOS is supposed to do in terms of being predictable and deterministic.