Day 29 - March 9, 2015

The defense renewed its request to limit survivor testimony to injuries and their immediate consequences and responder testimony to factual observations. Judge George A. O'Toole Jr. emphasized that testimony must concern guilt of the charged offenses. Counsel disputed the permissible scope of survivor victim-impact testimony in a possible penalty phase, without a final ruling. The judge allowed limited testimony about Matthew Patterson's military medical training but excluded the nature of his service and observations of IEDs. Jessica Kensky described the explosion, attempts to help her husband, Patrick Downes, and injuries that ultimately required both legs to be amputated. Photographs and damaged clothing were admitted. She identified herself in an image but said she did not recognize the black-capped individual behind her from that day. Danling Zhou described suffering an abdominal wound outside the Forum restaurant, emergency treatment, and writing requests from the ICU to find her friend Lingzi Lu. She later learned that Lu had died. Patterson described applying a belt tourniquet to Jane's amputated leg and helping carry her to ambulance personnel. Dr. James Bath recounted treating Lu with improvised tourniquets and requesting CPR. On returning to her, he thought she had died but could not say for sure. Boston EMS chief James Hooley reported 118 ambulance transports and said all red-tagged patients reached hospitals well within an hour. William G. Gross described halting the race, supplementing ambulances with police vehicles, communications congestion, security sweeps, and the FBI's assumption of investigative jurisdiction that evening. FBI forensic examiner Anthony Imel presented a compilation of surveillance imagery showing the brothers' approach and separate departures. He described a backpack appearing at the depicted suspect's feet after it was no longer visible on his back. The court admitted the compilation over a title-card objection but reserved admission rulings on two diagrams, allowing their use as chalks. On cross-examination, Imel acknowledged approximate camera times, uncertainty about the order of departure images, missing footage of Tamerlan's exact route, and differences between the animation and filmed walking positions. He could not determine which recorded call between the brothers appeared in the Forum video. On redirect, he placed the outgoing call before the explosion without establishing an exact interval. Kaytlin Harper authenticated Whole Foods surveillance and a milk-purchase receipt. She described a purchase around 3:14 p.m. but read the receipt time as 14:15; the testimony did not reconcile the discrepancy. Gregory Homol identified a fitness-center entry under Jahar Tsarnaev's name at 9:05 p.m. on April 16, 2013. Christopher Frias authenticated related campus footage and screenshots. FBI agent Steven A. Kimball linked two Twitter accounts to the defendant through email records and presented admitted posts. He distinguished another user's post from the defendant's response and acknowledged not knowing the meaning of two posts. His cross-examination was deferred until the next morning.