Jurors inspected the boat before hearing officers and residents describe the Watertown gunfire, explosions, and Mercedes escape. Witnesses distinguished their identifications from limits on visibility and attention. A physician described Officer Donohue's resuscitation, and a State Police commander testified about the search and boat response while clarifying what he had personally observed.
Full day summary
Jurors inspected the boat at a warehouse without testimony, under instructions not to discuss their observations or touch anything. Counsel described removed contents, writing-bearing slats, and a rear cutout used for FBI bullet-trajectory analysis. Timothy Watkins proposed that exterior blood supported an inference that Dzhokhar Tsarnaev was bleeding before entering the boat; this was counsel's anticipated argument, not a finding.
Watertown officers Joseph Reynolds, John MacLellan, and Jeffrey Pugliese described gunfire, explosions, and efforts to restrain Tamerlan Tsarnaev. Reynolds identified Tamerlan as the man who initially fired at his cruiser, but could not attribute the gunfire throughout the exchange. MacLellan identified Dzhokhar as the person who threw the second and third bombs, while remaining uncertain which failed to explode. His impression that two handguns were firing rested on simultaneous flashes; he acknowledged that one could have come from a lighter and could not determine which brother fired or whether they alternated. Pugliese described exchanging shots with Tamerlan but did not know whether his bullets struck him, and his focus on Tamerlan limited his observations of the other person.
Reynolds and MacLellan identified Dzhokhar as the Mercedes driver who approached officers restraining Tamerlan, ran over him, struck a cruiser, and escaped. Pugliese described trying to pull Tamerlan away and rolling clear of the vehicle. Resident James Floyd linked the larger explosive object's thrower to the Mercedes driver, but could not distinguish the two individuals or identify whom the vehicle contacted. Andrew Kitzenberg described explosions and the Mercedes turning and accelerating away, without identifying a shooter or bomb thrower. His photographs were admitted.
Emergency physician Heather Studley described treating Officer Richard Donohue, who arrived without breathing or a heartbeat. Resuscitation restored his heartbeat, followed by renewed bleeding that required direct pressure before surgery. Reynolds confirmed that Donohue survived.
State Police Major Francis Hughes described the search, shelter-in-place request, and police precautions around the boat. On cross-examination, he clarified that he arrived after the gunfire, did not see the boat or witness the arrest, and saw Tsarnaev pass on a stretcher. The court struck his account of information attributed to the carjacking victim and admitted the account of a 9-1-1 call only as a communication, not for its truth. Hughes said officers did not know whether weapons or explosives were present.