Yes, and no. If an employee gets a DUI, while not on company time, should they be terminated? Let me ask it differently...don't you think there are employees at US who have gotten DUI's and did not get terminated?
Pilots, FA's, mechs all fall under FAA regulations which call for possible suspension of their certificate(s) after a reported DUI. That's a different ball game. No certificate disqualifies one for work, which is grounds for termination.
But what if someone in accounting, or a reservation agent gets a DUI on some Saturday night? They'll be back to work. Just like Doug was. So let this one drop folks. He F***d up and paid for it.
If *ANYONE* at the company decides to go beat up on some fellow workers, on the other hand....don't you think they'd be terminated?