My only bit of experience working on a DoD-related project was a huge turn-off for me to do any more work in that space in the future because they were resistiv

My only bit of experience working on a DoD-related project was a huge turn-off for me to do any more work in that space in the future because they were resistive about approving any open source software. The development mindset on the project was to re-implement everything (including some tricky algorithms we were using) because it was unreasonable to expect any timely approval, even if it's a feature from the current version of a library that was already approved for an older version. I don't see the reasoning with it, since if anything open source is more secure because you know exactly what is going on inside of it, compared to closed source which may be from a trusted source but you have no idea what it's really doing under the hood. Hopefully this helps push things in the right direction, although I'm not optimistic.