drop the gun, drop the gun. >> dramatic south carolina video of a traffic stop gone terribly wrong. a deputy opens fire on a 70-year-old driver after he mistakes the man's cane for a shotgun. trace gallagher has the story. >> and megyn, let me just set this up as quickly as i can so we can play it quickly. the 70-year-old vietnam vet was driving through south carolina to florida from the daytona500, he gets out of the truck, doesn't acknowledge the deputy and reaches for something in the back of the truck. watch what happens next. >> hey, sir, sir -- [ gunfire ] >> shots fired, shots fired! drop the gun, drop the gun! [ bleep ]. >> deputy terrence knox fired