Well-programmed, very clear. Could be misleading, though (see subnote below). One particular caveat ... we were theorizing about their Taepodong-2 multistage missiles in the Bush years. Those never came to fruition. LA was under that theorized 'umbrella' at the time, also. So if your pants weren't already in a twist, no reason to twist now. Unless you're reading this from Japan.
Subnote: After the fall of the Soviet Union, a few very detailed books came out about ICBMs. Seems shooting missiles over the polar regions plays hell with navigational systems. Any given Soviet ICBM - or American ICBM - had a very large margin for error. Someone aims for New York, they could hit St. Louis. The magnetic fields, weather, etc. all mitigate against accuracy. It is highly doubtful NK has solved any of this, so many of the conjectures in the above animation are way, way off the mark (and shouldn't even really be theorized at all). That being said, if you see the GPS system go down, you know there's something big afoot.