My original question was not about mil leave here and there to supplement airline income. I think that it's clear cut as long as one doesn't drop leave to go skiing like kronan mentioned.
My question was about something I heard through the grapevine. May be complete BS but I heard that CAL fired a guy for dropping mil leave in training. Stating applicant lied about his / her availability date. I'm sure something like this would go into litigation(?) by the union or the courts. Maybe he dropped 1 year or 5 year orders on them and they decided he had intended to do that all along. Don't know, just curious if anyone had any first or second hand knowledge of a similar scenario. Good stuff so far...thanks for posting.
My understanding of the "laws" is that one can volunteer and go away for up to 5 years voluntary (active duty for example), and that involuntary (deployment) time doesn't count towards the 5 years. So if this is true I suppose it wouldn't be an issue if one was not on probation (can fire with "no cause") or in training.