Rick,
Failure to obey a lawful order (article 92) and unauthorized absence (article 86).
It was late, about 10pm... I was stationed in the Philippines at the time and they had an 11pm curfew. We had to be out the gate and in our houses by 11pm. I was still on the ship and had duty the next day. I was finished rebuilding a pump and I told my Leading Petty Officer I was going home. He said, no. I said yes. He said, if you go, I will put you on report. I threw him my pen and left the ship.
3 months later I went to Article 15 and received 45 days of extra duty (2 hours a day of extra work) and I was reduced in rank to E-3, but it was suspended for 6 months, meaning if I screwed up again in the next 6 months, i'd lose 2 pay grades.
Never got in trouble again. Well... never got taken to an article 15 again.