Paul Walker's last fully completed performance (although his final film performance was in Fast & Furious 7 which he was filming at the time of his death).
During the opening chase scene when Lino runs into the kids bedroom you can see a poster that says Wu Tang. RZA who plays Tremaine was a member of the rap group Wu Tang Clan
When they pan out from the missile launchpad, it's from a building in San Francisco and not from Detroit. You can clearly see the Transamerica Pyramid Building.
Lino and Damien jump from a roof through a window of the adjacent building. Lino jumps first, shatters the window. Damien jumps next, same window. View from behind as he jumps, the window is not yet broken. When he lands in the window, it's back to being shattered.
Just after the heroes cause the head-on collision after being chased, the sniper takes a shot at Damien. He tries to take another shot and realizes he has no ammo. He places in a new magazine and racks his bolt action rifle, ejecting the casing of the last shot showing he never worked the bolt before trying that second shot.