Tamerlan Tsarnaev & Dzhokhar Tsarnaev

Tamerlan Tsarnaev & Dzhokhar Tsarnaev

Andrew Kitzenberg/getonhand.com via Bloomberg

Boston Marathon bombing suspects Tamerlan and Dzhokhar Tsarnaev, duck behind a black Mercedes SUV, while shooting at police after midnight on Friday, April 19, 2013.