** FILE ** Keith Stansell, right, sits in an undisclosed location in southern Colombia, guarded by two rebels of the Revolutionary Armed Forces of Colombia (FARC), in this July 25, 2003, file photo. Stansell is one of three Northrop Grumman Corp. contractors, who were on what U.S. officials describe as a drug surveillance mission over Caqueta, a rebel stronghold, when their plane crashed on Feb. 13, 2003, and they were captured by FARC. "I'm deeply concerned about their fate," President Bush said in an interview with RCN TV of Colombia on Wednesday, March 7, 2007, on the eve of departing on a five-nation trip to Latin America. Bush heads to Bogota, Colombia's capital, on March 11. The man at left is unidentified. (AP Photo/Jorge Enrique Botero, File)