I was only an intern, and I haven't read that book, but it was overall a fun job. I was of a bleeding-heart-pacifist, so I made it pretty clear that I didn't want to work directly on weapons or anything like that and as a result, around 90% of what I worked on was actually C++ working on a camera to help detect mines.

The Fortran I touched was actually in an unrelated department; to what I was doing. Basically there was some old code that needed to be ported to an newer system; it was largely following the Fortran 77 spec so all they needed was an intern to copy the code over to a newer machine, and fix the compiler bugs.