Secretary of Defense Ash Carter holds a Marine Corps Ka-Bar fighting knife while being interviewed in his Pentagon office, Jan. 18, 2017.
Secretary of Defense Ash Carter holds a Marine Corps Ka-Bar fighting knife while being interviewed in his Pentagon office, Jan. 18, 2017. CLIFF OWEN ASSOCIATED PRESS
Secretary of Defense Ash Carter holds a Marine Corps Ka-Bar fighting knife while being interviewed in his Pentagon office, Jan. 18, 2017. CLIFF OWEN ASSOCIATED PRESS