Start dropping missiles when there's already 150 or more on screen

Browsers can't keep up beyond this. I'm betting beyond this point, people will
prefer to lose out on some of the accuracy rather than have the game crawl to a
halt and crank their CPU fan.
Double the missile limit

Let's see how this plays out
Center the map on the player once they're located
Zoom the map in after finding them
Move the geolocation failure fallback location to Moscow