In this Thursday, Feb. 13, 2014, photo, Colombia's armed forces chiefs, from left, Air Force commander Guillermo Leon, Navy Commander Vice Admiral Hernando Wills, Military's Chief of Staff Gen. Hugo Acosta, Defense Minister Juan Carlos Pinzon, President Juan Manuel Santos, Commander of Army Forces Gen. Leonardo Barrero, Army Commander Gen. Juan Pablo Rodriguez, and Police chief Rodolfo Palomino, review the troops during a military ceremony in Bogota, Colombia, Thursday, Feb. 13, 2014. Santos announced that changes on the military chain of command will be decided Tuesday, Feb. 18, 2014, after the country's leading newsmagazine, Semana, reported on what it called widespread kickbacks in multimillion-dollar military contracts, and the publication online of an audio recording in which Gen. Leonardo Barrero, the armed forces chief, is heard verbally maligning prosecutors' investigations into the extrajudicial killings that have brought Colombia international reproach. (AP Photo/Fernando Vergara)