There's nothing really to disprove, and maybe not even to mitigate, pessimism about funding levels changing. In more than just a few negotiations with opposing counsel I have had to remind them that Money Talks, and [insert well-worn vulgarity here] Walks (a phrase that I think got its start in auto dealerships).
If I never see or hear the "mission acc____" phrase again for as long as I might live, it still will be too soon.
Maybe the 737 MAX debacle is unfolding as a massive wake-up call; traffic is still projected to grow enormously in the next, let's say 10, 15 years or thereabouts, and unless the certification process Gets Well Soon the market needs of the world are going to be satisfied, but just not by U.S. manufacturing. I won't try to channel the late Wimpy of the Machinists because it can cause ranting.