Erratic Maneuvering (Open)
You trigger minor maneuvering thrusters, probe launchers, ballast vents, and other secondary systems at random to cause your starship to make small, unexpected jukes in its trajectory. This does not affect the starship’s facing or movement, but it grants a +1 circumstance bonus to your starship’s AC and TL against any opponent that performs the flyby stunt this round.
Source
Character Operations Manual pg. 146
