From left to right, Colombia's Police Chief Jose Leon Riano, Air Force Commander Gen. Tito Saul Pinilla, Vice President Joe Biden, his wife Dr. Jill Biden, Colombia's Commander of the Armed Forces Alejandro Navas, Army Commander Gen. Sergio Mantilla Sanmiguel and Navy Commander Adm. Roberto Garcia Marquez pose after offering flowers to Air Force servicemen fallen on the line of duty in a chapel at the Air Force base in Bogota, Colombia, Monday, May 27, 2013. (AP Photo/Fernando Vergara)