I work on sensitive government materials. One of the rules is that development occurs on an airgapped system. If I want to check the internet, I need to leave t

I work on sensitive government materials. One of the rules is that development occurs on an airgapped system. If I want to check the internet, I need to leave the room and retrieve my phone from a lock box. Occasionally I need to do that, but for the most part, we get by without. We also make a point of having an offline copy of all reference manuals and other documentation we might want. We also have source code of all of our dependencies, which helps.