On the roof carpark, when Mohinder drives towards the black van, two of the men walk around from behind the van. As he stops the taxi, the same two men emerge from behind the van.
In the satellite view of the airstrip, the hangars are beside the runways at a 45 degree angle. As the plane takes off, Nathan is standing watching the plane take off from the front door of the hangar. This means the plane is taking off at 45 degrees to the runway.
When Matt is talking to Usutu after he sees the tortoise loose, the staff Usutu is carrying goes from his shoulders to in front of him as each shot changes.