I'll let Jim answer on the tracking of missiles, but NORAD has both an air and a maritime picture, and it doesn't discount something that looks odd by saying, “Oh, this is a non-state actor, so we're not going to pay attention to it.” Anything now that looks like a threat to North America is literally a blip on the screen, and they pay attention to that, absolutely.
On October 28th, 2014. See this statement in context.