The point of this July 4th display is for Trump to demonstrate that he "rebuilt the military"

He's claimed without proof that Obama destroyed the military. said that lie over and over and over again. This will be his show that he built America's mighty military structure. As if we only had pointy sticks before.

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Trump’s claim to having rebuilt the military is also foundational to his tale of revived American greatness — and his own authorship of it. He pulled out of the Iran deal — international diplomacy had produced a “weak” solution — and will now force Iranian capitulation by threatening unilateral “obliteration.”

There is no doubt that Trump envisions this Fourth of July speech — delivered amid a show of military might — as a display of his own imagined role in “restoring” U.S. greatness.

But the whole story Trump told about American decline is false, and it is producing epic policy disasters. The demented worldview undergirding his lies about immigrants is producing a horrific humanitarian catastrophe. The anti-globalization rhetoric — while containing kernels of truth — has in practice produced a combination of bread-and-circuses bluster toward foreign elites and destructive trade wars with no end.

https://www.washingtonpost.com/opinions/2019/07/03/trumps-hijacking-july-th-just-got-lot-uglier/?utm_term=.70bfe9325884