Discovery Channel tribute to Tim Samaras and son Paul Sunday night

As you probably heard, veteran storm chaser Tim Samaras - a Discovery Channel star as well - was killed Friday during an outbreak of tornadoes he was following; in addition, his son Paul and a colleague Carl Young were also killed. TDC dedicated its special telecast of "Mile Wide  Tornado" last night, and here's a good ABC News wrap-up by Ginger Zee of the tragedy: