I was a Technical Illustrator for Lockheed from 1980 to 1993. I was promoted to Commercial Artist in 1990, but the workload did not change much. The first six years I worked on a drafting table, and the last seven years I worked on a VAX workstation doing vector based drawings with a software called Interleaf. I called it "industrial strength Macintosh," because it was so much more robust than McDraw. Another software we used on the mac was called Canvas, closer to Illustrator than McDraw. Starting in 1986, we created slides with MS Powerpoint, after years of cutting and pasting them on a drafting table.
Even our small projects were in the hundreds of pages...
"Following the end of the Cold War, Lockheed laid off 20,000 workers from the Sunnyvale plant in the early 1990's. 5,000 of them were CADAM operators."