48 Hours presents a special broadcast of "The Lord's Boot Camp." Through a unique collaboration Loki Films, producers of the Academy Award-nominated documentary Jesus Camp, the program takes an unprecedented look at three teenagers training to become Christian missionaries while also dealing with the pressures that teens face daily. This marked the first time a camera crew had been allowed to document the teens' experiences at camp, their missions and their returns home. In the summer of 2007, Tabitha Taylor of Bellwood, Pa., Nicole Scrivener of Tallahassee, Fla., and Valerie Smith of Las Vegas, Nev. were among the 700 kids who gave up the luxuries of ipods and cell phones to attend The Lord's Boot Camp. At the two-week, no-frills training camp in central Florida, the girls face physical and mental challenges as they prepare to embark on evangelical missions in the U.S. and Africa and spread the word of God. Taylor, 13, is passionate about her religion and a natural-born leader who excels at camp, but struggles to fit in among her peers. Scrivener, 15, grapples with drug and alcohol abuse, straining her relationship with her family. Her rebellious attitude creates tension at camp, too. Smith, 17, is dedicated to her religious beliefs but finds it difficult to be away from her boyfriend as she faces the physical challenges of camp.