[lonewolf]

Also is the fact that they had explosives with them.Why?
At least 1 pressure cooker bomb and pipe bombs. So what were they up to that night?
The MIT office may have rolled up on them. They wouldn't know that he was there for something else and thought he was there for them. They shot him in his car and he didn't have his weapon out so it happened very fast. People heard and reported the gunshots and that is what started the whole series of events.

Maybe the naked man is this Misha guy they are looking for?
There is also a murder a couple years ago of people the older brother knew and is very suspicious.