Boston has been on lockdown all day Friday, as police and investigators hunt for Dzhokhar Tsarnaev, the surviving suspect in the Boston Marathon bombings. His brother Tamerlan Tsnarnaev, known as "the black hat suspect," was killed overnight in Watertown.
Late yesterday, the two brothers killed an MIT university police officer named Sean Collier before carjacking a Mercedes SUV in Cambridge.
As the day comes to a close, and the city continues to stay in lockdown -- possibly for the entire weekend -- two WGBH reporters and Boston residents give updates from where they're locked down, and reflections on the events of the week.
Phillip Martin is WGBH Senior Investigative Reporter. And Edgar B. Herwick III is a reporter for WGBH radio.