Coming up this Friday at 9pm/8c on Dateline...
In a NBC News exclusive, former NASA chief Sean O'Keefe talks with Ann Curry about how he and his son survived the tragic Alaskan plane crash that killed former Senator Ted Stevens and four others in August 2010.
Watch exclusive previews of 'Rescue on the Mountainside' below:
Also on Dateline this Friday, when two Americans living in Panama go missing, islanders discover the dark side of a fun-loving bartender in Bocas del Toro. Kate Snow reports.