DS in US defense companies

I’ve always wondered what data scientists in defense related companies operate. A bit different than going the usual tech/quant industry as a data scientist but I wonder how the roles may be different in a defense related company. I’m talking companies like Raytheon, NG, Lockheed Martin, Booz Allen etc. any perspective would be great.

allen booz allen companies data datascience data scientist data scientists defense etc industry lockheed martin perspective quant raytheon roles scientists tech