Most helpful skills?

[Tarkh]

Originally Posted by DamienPS

Are the skills on the Tactical Security Chief and Planetary Party Leader complimentary or mutually exclusive?

The answer is 3 posts above

[Kazeto]

Generally speaking, if two different skills give the same kind of bonus, it is complimentary. If two things give the exact same bonus (either two officers with the exact same skill, or artefacts with the same effect as an equipped device has), however, then you only get the effect once.