Can confirm, defence (related) and security clearance requirements largely limit the applicant pool. One, because for some reason Lockheed is dirty while Palantir or Facebook isn't. And because a lot of people are, by virtue of country of birth, ineligible of getting a security clearance. Also decent money and job security.

But while I draw my moral.line at small arms (those have the nasty habbit of ending everywhere, and the likes of Heckler and Koch have their long list of export scandals), others draw their line at weapons in general. Both view points are fine, as is working for the likes of SIG Sauer.