We had something join behind us on the #3 engine in the KC-10 in the middle of the Pacific ocean around 2004 timeframe. No shit. It was night time. I went to look over the right wing and saw a group of lights that resembled an island at night, but instead of being 30,000 feet below us, it was tucked in tight on the right wing. Fucking scary shit. Apparently, it was flying in front of the jet before I was woken up by another crewmember. Fucking strange. I was a boom at the time. I wasn't hungover. That stuff is out there.