Maybe the Russians did fool around with NATO GPS reception in the recent exercise.
Maybe Russians do fool around with Aegis ships and cause them to be run into by big slow commercial ships or jam their systems so they can’t see Russian planes.
(Stuck in the back of my head is a Russian guy who knew about these things telling me that, back in The Day, the Sovs had looked at their weak points and NATO’s strong points and directed their efforts accordingly. And that Russia has inherited the tendency and the results).
The Russians know that without GPS most of USA/NATO’s ground or air wouldn’t work and without Aegis their surface navies would just be targets.
On the other hand, maybe USA/NATO forces aren’t as good as they think they are. (I well remember how bad the US Army was on NATO exercises in Germany in the 1980s).
Two thoughts to think about.
Me? I don’t know. I put all this stuff in the Maybe (awaiting further data) Basket.