It was 2:20 a.m. 鈥 well beyond Sheryl Rinkol鈥檚 bedtime. Sleep wasn鈥檛 an option as she listened to ocean waves slap the side of her cruise ship while it floated 2 陆 miles above the Titanic wreckage.
鈥淚t was very surreal,鈥 said Rinkol, assistant director of Nebraska Wesleyan University鈥檚 Cooper Center. 鈥淚t made me think about my own mortality.鈥