"We haven't seen this in quite some time," Retired NYPD Chief of Detectives and ABC News Contributor Robert Boyce said.
January 1
The first shooting of the year happened before dawn on the morning of New Year's Day.
An officer was napping between double shifts in his car parked in a precinct parking lot when he was struck in the head by a bullet, leaving him with a fractured skull.
"This could have been a very tragic outcome," Police Commissioner Keechant Sewell said.
NYPD officer struck by bullet while resting in his car on New Year's Day
January 18
On Tuesday, another officer was shot while on duty in the Bronx.
He was struck in the leg by a bullet during a struggle with an armed suspect.
The 16-year-old first shot himself as they fought over the gun and the bullet passed through him and then struck the officer.
NYPD officer and teen wounded when teen's gun goes off
January 20
On Thursday, a narcotics detective on a drug bust was shot in Staten Island.
"I heard like about 13 or 14 shots, like one after the other," a neighbor said.
Despite a hail of bullets and being struck in the leg, the officer was able to hold up a ballistic shield to protect his fellow officers.
'Heroic' NYPD detective shot during drug bust on Staten Island
January 21
In Friday's shooting, two NYPD officers were shot in Harlem.
Jason Rivera, a 22-year-old rookie officer, died while 27-year-old Wilbert Mora is in critical condition at Harlem Hospital.
The gunman was shot by another officer and is also in critical condition.
NYPD officers identified after 1 killed, 1 injured in Harlem shooting
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