Boston Marathon bombing trial: Police describe shootout
Catherine E. Shoichet
”Dzhokhar Tsarnaev did not have to go back and run his brother over.
['”Dzhokhar', 'Tsarnaev', 'did', 'not', 'have', 'to', 'go', 'back', 'and', 'run', 'his', 'brother', 'over.']