Harry says "Our paths need never cross again," and an Oriental lady extra crosses the shot in front of him. We then cut to the opposite shot showing Sasha's reaction - and the same woman crosses the shot again, going in the same direction, but this time behind Sasha.
Erin tells Ruth to have biohazard units standing by to help with the bomb, which doesn't make much sense since the threat is not biological. She should have said BNC (biological, nuclear, chemical) hazard units.