Retired lieutenant general: US responding to 'arms race in space' that's already underway

Retired U.S. Air Force Lt. Gen. David Deptula on Tuesday said the revelation that the U.S. has deployed weapons into space is in response to a space "arms race" that has "already been underway," referring to similar efforts by Russia and China. Deptula told NewsNation's Katie Pavlich on "Katie Pavli