Using C++ vs wishing an Ada ecosystem into existence may have been one of the few successful cost saving measures.
Keep in mind that these are not normal programmers. They need to have a security clearance and fulfill specific requirements.
You’ll be interviewed, your family, your neighbors, your school teachers, your past bosses, your cousin once removed, your sheriff, your past lovers, and even your old childhood friends. Your life goes under a microscope.
If I were back on the job market, I’d be demanding a big premium to go through it again. It’s very intrusive, puts significant limitations on where you can go, and adds significant job uncertainty (since your job is now tied to your clearance).