How To Use Red's "Gun Servitor" Ability?

By Raven Bloodeyes, in Space Hulk: Death Angel - The Card Game Expansions

Since this Support Action card says "you may choose a Space Marine....", does this mean you can choose ANY Space Marine, even those belonging to other combat teams?!? Or does this only apply to the Red Team's Marines, Raphean and Hephaestus?


Everything else says Your Space Marine when it refers to one in the same team, so I'm assuming anybody.