The heavy does and iirc they picked that skill on one of their heavies (the one that doesn't have Holo targeting).
you're right! I always thought that it just meant they could shoot twice, because that's what I always did.
This ex-corps base management is something else. Let's sell this limited resource along with double the time and money to build, demolish, and rebuild things constantly in the name of efficiency.
And 4 medkits and 3 nano vests!