Yep, we have an entire hardware engineering team that maintains our fleet of time machines that we use to travel back to 1987 to recruit new FORTRAN programmers.
Actually, our second language is (server-side) JS.
I have a lot of friends who work at Bloomberg on Fortran code. I believe you that your #2 is JS, but either I have the weirdest luck of finding people who work at Bloomberg, or Fortran has to be pretty high up there.
Care to elaborate why you think it is unmaintainable? It has worked out well for us. We chose between Lua and JS and ultimately JS won because it was easier to find people who knew it and could be productive faster without training / time to learn Lua.
Actually, our second language is (server-side) JS.