russian social media web site, the suspect's world view is described as islam. his personal priority, career and money. a video so showning the carnage. dzhokhar became a u.s. citizen on september 11, last year. he enrolled at the dartmouth campus of the the university of massachusetts. >> regular teenager. i didn't suspect anything. he was on the wrestling team. he went to parties with other students. >> he was an out assistanting athlete. >> another friend says one conversation does stand out.