5. Did the brothers intend to die during the attacks or their aftermath?
It seems shocking to many that the Tsarnaev brothers might have been wearing suicide vests during their gun battle with police on Thursday night, but in reality several U.S. citizens and residents have intended to die in terrorist attacks.
Three of the young Somali-American men who traveled from Minnesota to fight in civil war in Somalia later carried out suicide attacks there.
Major Hasan undoubtedly went into his attack on a military base full of armed U.S. soldiers believing that it would be the last thing he did before he died. (That prediction did not come true. He was wounded in the attack but not killed).
Al Qaeda recruit Najibullah Zazi, who plotted to bomb the Manhattan subway in the summer of 2009, planned to die in this attack but was arrested before he could pull it off.