A hunky FBI agent, a 35-year-old amputee, an unhinged drill sergeant and a young, female sheep farmer are among the 18 contestants competing in Survivor: Vanuatu, Islands of Fire, premiering Sept. 16 on CBS. The latest crop of wannabe actors were unveiled on this morning's Early Show. (For a look at the two new tribes, go to CBS.com.) All-Star sweethearts Rob Mariano and Amber Brkich were on hand to weigh in with their early faves — and give host Julie Chen some late-breaking scoop on their upcoming nuptials. Asked whether the ceremony will be televised a la Ryan and Trista, Brkich teased, "It's a pretty big possibility." And in an unbelievable coincidence, so is their divorce!