AOA,
I hope you are not a journalist, but I'll say it any way. It might help others.
It happened many years ago, and I still think about it and I know I should have acted differently.
It was a 0700 departure. When the captain and I entered in the cockpit I noticed that he had been drinking. I didn't say anything to him, but I should have. What if something happened. Luckylly nothing happened, but it could have. Now I think that I should have talked to him right there and
ask him to call in sick, if not I will do it for him. And if he denied it I would call the authorities to have him tested for alcohol. Now, I think that's the right thing to do.