get ready, folks...
The writer did mess up the subheading (in bold). Apparently, Japan intends to shoot a rocket carrying a satellite with an SM-3 before shooting the fragments with Patriot missiles.
And yes, it would be a needed demonstration after the heaps of garbage disseminated by adversaries for a long time about western defense readiness.
I see a couple ships getting sunk in the Sea of China because of war games, playing chicken. Got the right dolt in the White House for that to happen.