My thoughts on this are as follows.
First of all, the whole Q400 is interesting. No coincidences, so…either the black hats were trying to make some kind of Q connection, which in my mind doesn't hold a lot of water because it's too vague, not a strong enough connection nor very "optic" as a means for such a connection. The other possibility is that it was a white hat op for some reason.
So add the missile element. It was in the same general area where that missile was launched. Possible diversion to seize/destroy person/persons/equipment used in launch?
The name factors seem way to coincidental and that missile looked like a polaris or trident to me which WOULD indicate a sub launch.
Another possibility is that the person who actually launched the bird was the pilot and was conveniently "suicided."
I am leaning in the direction of it being a white hat op for some reason because of the Q400 thing, something usually only an anon would notice, and the fact that the guys name was the same as that sub.
It suggests to me that maybe Q was telling us what to dig on and also telling the black hats we know the hows and whys of the launch.