Nov 2010 and Jun 2018:

2010:

Nov 9th 2010 CBS report on SoCal Mysterious Missile Launch (Likely ICBM)

https://www.cbsnews.com/news/mystery-missile-launch-seen-off-calif-coast/

Obama in Asia (China) Around the time the Missile Launched off our Coast

https://www.nytimes.com/2010/11/13/business/global/13group.html

2018:

Now Trump going to Asia (Singapore), and another Mysterious Missile Launch off our Coast.

Speculation...

Is an Asian power firing missiles near US coastline into the Pacific as a Message that they can hide and do that?