Slain NYPD officers remembered

New York Gov. Andrew Cuomo leaves the wake of New York Police Department officer Wenjian Liu at the Aievoli Funeral Home.  (John Minchillo / AP)

From left, New York Police Department Commissioner Bill Bratton, Rikki Klieman, Bratton’s wife, New York City Mayor Bill de Blasio, and 1st Deputy Commissioner Benjamin Tucker, exit the wake of New York Police Department Officer Wenjian Liu at Aievoli Funeral Home, Jan. 3, 2015, in Brooklyn.  (John Minchillo / AP)

NYPD Officer Wenjian Liu’s wake  (Jewel Samad / AFP/Getty Images)

From left, 1st New York Police Department Deputy Commissioner Benjamin Tucker, New York City Mayor Bill de Blasio, upper, New York Police Department Commissioner Bill Bratton, and Rikki Klieman, Bratton’s wife, arrive at the wake of NYPD Officer Wenjian Liu at Aievoli Funeral Home, Jan. 3, 2015.  (John Minchillo / AP)

The body of New York City police officer Rafael Ramos is brought from Christ Tabernacle Church after his funeral in the Glendale section of Queens, where he was a church member, Dec. 27, 2014, in New York.   (Craig Ruttle / Associated Press)

Law enforcement officers turn their backs on a video monitor as New York City Mayor Bill de Blasio speaks during the funeral of slain NYPD officer Rafael Ramos.  (Shannon Stapleton / Reuters)

Maritza Ramos and her son Justin Ramos watch as the casket of her husband, slain NYPD officer Rafael Ramos is loaded into a hearse during his funeral at Christ Tabernacle Church.  (Carlo Allegri / Reuters)

Police officers salute as the hearse of New York city police officer Rafael Ramos drives along his funeral procession route in the Glendale section of Queens.  (John Minchillo / Associated Press)

New York Mayor Bill de Blasio (L) shakes hands with Police Commissioner William Bratton outside the funeral for New York police officer Rafael Ramos on December 27, 2014 in New York.   (Don Emmert / AFP/Getty Images)

Police officers gather outside the funeral of slain NYPD officer Rafael Ramos at the Christ Tabernacle Church on December 27, 2014.  (Kevin Hagen / Getty Images)

Vice President Joe Biden arrives outside the funeral of slain NYPD officer Rafael Ramos at the Christ Tabernacle Church on December 27, 2014 in the Glenwood section of the Queens borough of New York City.   (Kevin Hagen / Getty Images)

Family members arrive for the funeral of New York police officer Rafael Ramos on December 27, 2014 in New York.  (Don Emmert / AFP/Getty Images)

Family members arrive for the funeral of New York police officer Rafael Ramos on December 27, 2014 in New York  (Don Emmert / AFP/Getty Images)

NYPD officers embrace before the funeral of slain NYPD officer Rafael Ramos at the Christ Tabernacle Church December 27, 2014 in the Glenwood section of the Queens borough of New York City.   (Kevin Hagen / Getty Images)

Police salute during the playing of the National Anthem outside the Christ Tabernacle Church at the start of the funeral service for slain NYPD officer Rafael Ramos in the Queens borough of New York December 27, 2014.  (Mike Segar / Reuters)