CNN The Lead With Jake Tapper January 15, 2014 21:22:00
Am living vicariously through my son. i will not leave you on the battlefield. >> reporter: in 2011 his father made this impassioned video appeal direct to his son's kidnappers. >> it's past time for him and the others to come down. to the nation of pakistan, our family, we wish to convey our compassionate respect. >> reporter: u.s. officials say his safe return is a top priority. u.s. central command keeps a constant reminder of him in its headquarters in florida. >> our hearts today are with the bergdahl family. using our military, intelligence, and diplomatic tools the united states is cont...