grandchild. you sense the anger the panic, and then you hear the fatal gunshots. randy indicate reports. >> don't shoot! >> reporter: those were the last words kathy gonzalez spoke before her husband was shot dead. ] gunfire ] >> he shot my husband. >> reporter: her husband a 44-year-old, was shot right in front of the couple's young daughter and grandson. this is the man who shot him, 51-year-old robert doyle. the two florida men had crossed paths just two and a half minutes earlier, during a road rage incident with each car calling 911 to report the other. >> driving a full size truck with a trailer. you don't drive like idiots. >> i have a truck, some maniac in the thing following me trying to run me off the road. >> doyle warning operators he is heading home where he has a gun. >> my gun is cocked and locked.