Day 12: The Evidence Piles Up Against Tsarnaev | WBUR

Less than a month before the Marathon bombing, Dzhokhar and Tamerlan Tsarnaev rented two 9mm handguns for target practice at a shooting range in New Hampshire. The weapons were the same caliber as the gun used to kill an MIT police officer three days after the bombings. Boeri and Cullen discuss the evidence that continued to pile up against Dzhokhar in Day 12 of the trial.