There's also other people sharing their memories about Casey (♥), the article is pretty touching in my opinion.
"The night before he died, we had just left Detroit, on the way to D.C., and everybody was up in the front lounge, laughing and talking and joking," Carli said. "He was being hysterical — we took some video footage of him trying to sing the theme song from the 'Aladdin' movie — and that was about 2 in the morning, and we called it quits and decided to go to bed."
"He was tired but decided he wasn't going to go to sleep, and for once, I went to sleep before him, which generally wasn't the case. And I remember he went to his bunk and opened up my curtain, which I don't think he'd ever done, and said, 'Hey, I'm finally going to sleep.' " Ridenour said. "And I was like, 'All right, well you need to go to sleep, because you're tired,' and he said, 'All right, well, good night.' And I don't think I'd ever said good night to him, and he'd never said good night to me. It was just this weird thing, but I'm glad it happened."