New Video of Dzokhar Tsarnaev's Capture Released

(ABC) As Dzokhar Tsarnaev recovers in the same Massachusetts hospital as some Boston Marathon bombing victims, authorities released a new aerial video showing how they were able to take the suspect into custody alive.

Tsarnaev, 19, is under heavy guard at Beth Israel Deaconess Medical Center in Boston, where he is listed in serious but stable condition and is awaiting charges. Investigators said he is unable to communicate because of his injuries that might include wounds from an earlier gunfight.

Massachusetts Gov. Deval Patrick said he hoped Tsarnaev survives "because we have a million questions."

A bird's-eye view of the moments before Tsarnaev's capture gave authorities an idea of what to expect as they methodically closed in on the Boston Marathon bombings suspect, who was hunkered down in a boat in a Watertown, Mass., backyard.

Police believe Tsarnaev was initially wounded Thursday night in the gun battle that ended in his brother's death. Police said they found blood in a car he abandoned and blood at a house.

A thermal-imaging camera showed Tsarnaev was able to move around inside the boat, as the FBI SWAT team brought in a robotic device to approach the boat and peel back a tarp, giving authorities a clear view of the suspect.

At least two flash grenades were thrown into the boat, designed to disorient Tsarnaev, who authorities feared might have been wearing a suicide vest.

They were then able to move in, rushing Tsarnaev to Beth Israel Deaconess Medical Center for treatment, where he has remained under heavy guard. He was not wearing a vest.

It was unclear whether he was hit by a final exchange of gunfire Friday.

Tsarnaev is in the same hospital where his brother, Tamerlan, 26, was brought early Friday after a shootout with police. Tamerlan died of his wounds.

Investigators, who are expected to include the country's elite counterterrorism unit, are hoping that Tsarnaev survives because they are intent on determining what triggered his and his brother's alleged involvement in the attack and whether they had any help.
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