Retired South Carolina Army vet whose geologist son vanished without a trace running for Congress

David Robinson upended his life after terrorists attacked America on Sept. 11, 2001, selling his trucking business to join the Army, where he served two tours in Afghanistan before suffering injuries in an IED blast.

"I joined the military when duty called to fight for our country, defend our democracy, defend our way of life," he told Fox News Digital. 

Decades later, his life changed again when his geologist son vanished without a trace from a well site in Arizona. Now he's running...