Boston Police and FBI used helicopters to fly over the tarp-ed boat where Dzhokhar Tsarnaev was hiding on Friday, and they have just released this raw video showing thermal imaging of Dzhokhar's movements in the boat before they apprehended him.
The robot was being used to tear away at the tarp while the police were throwing flash-bang grenades to subdue Dzhokhar, but as can be seen he seemed not to be retaliating by the end of the night because he was bleeding extensively and was nearly unresponsive in the bottom of the boat.
Describing the intense firefight in Cambridge and subsequent manhunt through Watertown, Boston Police Commissioner Ed Davis summarized that "This was as dangerous as it gets in urban policing." Doing the rounds of Sunday talk shows, Davis also that they retrieved enough explosives, ammunition, and homemade grenades that they now believe the suspects may have been planning future attacks.
Dzhokhar is still in serious but stable condition, and yet to be interrogated by the Police and FBI. While the police waits for his recovery, they have been searching for a motive and searching through everything and interviewing everyone they can find. Dzhokhar reportedly returned to UMass Dartmouth after the bombings on Wednesday, even apparently going to class and a party before leaving the campus Thursday once FBI released photos.