Emotional NYC Officer Testifies on Fatal Stairwell Shooting

Emotional NYC Officer Testifies on Fatal Stairwell Shooting
New York City rookie police officer Peter Liang, right, leaves the courtroom after his arraignment at Brooklyn Superior court, Wednesday, Feb. 11, 2015, in New York. AP Photo/Mary Altaffer
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New York City rookie police officer Peter Liang arrives at court in New York on Feb. 11, 2015, for arraignment. Opening statements are expected Monday, Jan. 25, 2016 in Liang’s manslaughter trial for the 2014 death of Akai Gurley. (AP Photo/Seth Wenig, File)
New York City rookie police officer Peter Liang arrives at court in New York on Feb. 11, 2015, for arraignment. Opening statements are expected Monday, Jan. 25, 2016 in Liang’s manslaughter trial for the 2014 death of Akai Gurley. AP Photo/Seth Wenig, File