Plot hole: When Krivas threatens to shoot Benny, the pistol's slide is locked in the open position, which indicates that the pistol is either out of cartridges, or a cartridge (or cartridge case) has jammed within the pistol and so cannot be fired. This makes any threats to shoot a bluff.
Continuity mistake: When the RAF planes are scrambled to intercept Krivas' plane, they keep swapping between Harriers and Jaguars. Also, the landscape keeps switching between lowlands and mountainous regions. (This is probably due to the show's producers using 'stock footage' taken from RAF Training films, supplied to them by the UK Ministry of Defence).