A man who was carjacked by the Tsarnaev brothers three days after the Boston Marathon bombings testified Thursday about how he escaped their grasp on the night of April 18, 2013. Dun Meng said it all started when Dzhokhar Tsarnaev's older brother, Tamerlan, knocked on his window, jumped in his car and forced him at gunpoint to drive the brothers around.
When Dzhokhar Tsarnaev went into a gas station to pay and get food, Meng says he saw a chance to escape. He fled to another gas station across the street. Meng then asked the gas station attendant to call 911 -- you can hear the call in the above video.