You are claiming the US shot down a ballistic missile launched from North Korea and then covered it up to prevent a hot war?
The claim I read was it was a Chinese rogue sub, they made the launch and then China proper took them and the missile out. Because we had advanced warning in knowing their plans.
All I would say is that the emergency alert button did not accidentally get pushed, period.
I also read reports of a yacht that had radio’d in and reported seeing something explode and splash down... That fit flight path and time line and some other immediate witness accounts and responses that indicated this was probably the case.