[Cain nods.] With very few exceptions, the members of the Defense Force are reliable. We receive the privilege of protecting the good people of this place, and constant access to a list of troublemakers. [Hint hint, Gaunt.]
The single outward way to identify Force members is their possession of weapons. [Cain gently pats his laspistol's holster. Hint hint hint.] Of those I know personally, I can vouch for Suzaku Kururugi, Jeanne Fránçaix, Saya Otonashi, Lacus Clyne, and the older Kitty Pryde.
Pryde and Otonashi appear to have some inhuman abilities, but based on my experience, I believe we can count on them.