The Boat, The White Hat, The Survivors: Key Moments In Boston Marathon Trial

BOSTON (AP) — The defendant's startling admission on Day One that he did it. Tearful testimony from survivors who lost limbs. The boat. The white hat. As the prosecution rests, here's a look at some of the most compelling moments in the government's case against Boston Marathon bomber Dzhokhar Tsarnaev: OPENING STATEMENTS Tsarnaev's lawyer, Judy Clarke, startled a packed courtroom when she bluntly admitted during opening statements, "It was him." In a strategy designed to save him from the death penalty, Clarke told the jury that Tsarnaev had fallen under the malevolent influence of his now-dead older brother, Tamerlan, who she said had become radicalized and drew his brother into his plan to bomb the marathon. But prosecutor William Weinreb said the two brothers were equal partners in a plan to "tear people apart and create a bloody spectacle" to retaliate against the U.S. for its wars in Muslim lands. The Tsarnaevs — ethnic Chechens — moved to the U.S. from Russia more than a decade before the bombings. ___ THE SURVIVORS People who lost limbs in the explosions delivered heart-wrenching testimony about the moments after the explosions. Rebekah Gregory said she looked down at her leg: "My bones were literally laying next to me on the sidewalk and blood was everywhere. ... At that point, I thought that was the day I would die." Boston Marathon bombing victim, Rebekah Gregory, right, arrived at Moakley Federal Courthouse in Boston, where the second day in the trial of Dzhokhar Tsarnaev got underway on March 5, 2015. (Photo by Wendy Maeda/The Boston Globe via Getty Images) Bill Richard, the father of 8-year-old Martin Richard, who was killed in the second explosion, described making the agonizing decision to leave his mortally wounded son with his wife so he could get help for his 6-year-old daughter, whose leg had been blown off. "I saw a little boy who had his body severely damaged by an explosion, and I just knew from what I saw that there was no chance," Richard said. Jeff Bauman, who lost both legs in the attack, recalled locking eyes with Tamerlan Tsarnaev just before the first bomb exploded. "He was alone. He wasn't watching the race," Bauman said. Bauman, who gave the FBI a description of Tamerlan from his hospital bed, became a symbol of the attack when he was captured in an Associated Press photograph as he was wheeled away from the bombing scene, ashen-faced and holding onto his ravaged legs. ___ THE BOAT Investigators work, on Saturday, April 20, 2013, near the location in Watertown, Mass., where police captured Dzhokhar Tsarnaev in a backyard boat after a wild car chase and gun battle earlier in the day left his older brother dead. (AP Photo/Katie Zezima) Jurors were taken to South Boston to see the boat Dzhokhar Tsarnaev was captured hiding in four days after the bombings. On the inside walls of the boat, Tsarnaev wrote and carved a note denouncing the U.S. for its actions in Muslim lands. "Stop killing our innocent people and we will stop," he wrote. Jurors also saw more than 100 bullet holes on the sides of the boat, which was fired at by police before Tsarnaev was captured. ___ THE WHITE HAT This Monday, April 15, 2013 photo provided by Bob Leonard shows bombing suspects Tamerlan Tsarnaev, 26, center right in black hat, and his brother, Dzhokhar A. Tsarnaev, 19, center left in white hat, approximately 10-20 minutes before the blasts that struck the Boston Marathon. (AP Photo/Bob Leonard) An FBI agent showed jurors the white cap Tsarnaev wore during the attack. In video and still photos released by the FBI three days after the bombings, Tsarnaev was seen wearing a white cap backward. The FBI referred to him as "White Hat" until they learned his identity. ___ THE KILLING OF THE POLICE OFFICER Jurors heard the frantic radio call made by a Massachusetts Institute of Technology police officer who found fellow Officer Sean Collier mortally wounded in his cruiser. "Officer down! Officer down! ... Get on it!" the officer yelled. A medical examiner testified that Collier, 26, was shot three times in the head, including one shot between the eyes. Tsarnaev's lawyer said it was Tamerlan who shot Collier. An MIT graduate student who was riding his bike by the scene around the time of the shooting identified Dzhokhar as the man he saw leaning into Collier's cruiser. A Ruger pistol, that was shown during the Dzhokhar Tsarnaev federal death penalty trial, is displayed at a conference room at the John Joseph Moakley United States Courthouse in Boston, Tuesday, March 17, 2015. Authorities say the P-95 Ruger was the gun used to kill MIT police officer Sean Collier. (AP Photo/Charles Krupa) ___ CARJACK VICTIM Dun Meng testified about a harrowing ride he had with the Tsarnaev brothers the night of April 18, 2013, hours after the FBI publicly released photos of the two men as suspects in the bombings. Meng said he pulled his car to the side of the road to respond to a text message when suddenly a man jumped in, pointed a gun at him and told him to drive. Meng said the man — Tamerlan Tsarnaev — told him he had committed the Boston Marathon bombings. Meng testified that Dzhokhar Tsarnaev later joined them in the car, took his bank card and withdrew $800 from an ATM in Watertown. Meng said he jumped from the car when the brothers stopped to get gas and ran across the street to another gas station. Jurors saw surveillance video of a terrified Meng begging the clerk to call police. Dun Meng is seen here on a gas station's surveillance camera moments after escaping from Tamerlan and Dzhokhar Tsarnaev, who had carjacked his Mercedes SUV and stolen money from his bank account at an ATM in Cambridge, Massachusetts on April 18, 2013. ___