Most of the US Navy's combat ships, and most assuredly the ones built or re-built within the last 15 years have from at least essential equipment EMP protected to very significant amounts of equipment protected from EMP. The same goes for combat aircraft to a major degree. As the Army and Marines have replaced and updated ground combat equipment and C4I, they have incorporated significant EMP protection.
But, protection does not mean absolutely no impact if they have to operate in an EMP rich environment. Some items will undoubted fail, for a variety of reasons. But the US military, all branches, is not nearly as vulnerable as often thought. They certainly are a very long way from being immune, but they will continue to be an effective fighting force on all fronts despite nuclear HEMP event, or repeated non-nuclear EMP generator attacks.
Plus, even before much of the mobile equipment hardening became large scale, all services adopted and put into practice extensive electronic failure by EMP procedures and practices. Even if they do lose some equipment, and they will and know it, they have procedures in place to be able to continue to fight effectively.
In the civilian sector, there are some of the majors that have hardened specific aspects of both their operations and their products to prevent major damage from an EMP. And, like the military, have plans to deal with the situation if they do lose any part of their infrastructure to EMP. But they are definitely the minority. In general, civilian industry, and especially commercial operations are highly vulnerable and will be shut down completely when we are hit with a HEMP or local EMP event.
And of course, despite the protections that have been put into place, a major HEMP will take down the majority of the electrical grid and infrastructure, which will have devastating impact on the rest of the infrastructure. And this is what we, as preppers, have to be ready to deal with.
Just my opinion.
Just my opinion.