article_snippet: Tamerlan,  26, was killed shortly after the 2013 attack, and
article_snippet: Tamerlan brother Dzhokar, (right, then 19) is now on trial .
article_snippet: Tsarnaev, 26, was killed in the manhunt that followed the attack.
article_snippet: Tsarnaev's younger brother Dzhokar, 19 at the time, is on trial for terrorism charges in connection with the Boston Bombings.
article_snippet: Above, a April 15, 2013 memorial to the terrorist attack's victims .