1980

Serpas joins the New Orleans Police Department as a patrolman.

1990

Serpas is promoted to captain, then major; says he wants to be chief one day.

Oct. 15, 1996

Superintendent Richard Pennington taps Serpas as deputy superintendent and chief of operations.

July 19, 2001

Serpas named chief of the Washington State Patrol.

Jan. 5, 2004

Serpas takes over as chief of the Metropolitan Nashville Police Department.

May 6, 2010

Mayor Mitch Landrieu names Serpas chief of NOPD.

May 5, 2011

Landrieu wades into roiling scandal over traffic camera detail work, suspending Police Cmdr. Edwin Hosli, a close Serpas friend, without pay.

March 7, 2012

NOPD Officer Joshua Colclough shoots and kills unarmed Wendell Allen, 20, while serving a search warrant, causing some to call for Serpas’ firing.

May 30, 2012

Landrieu announces hiring of retired military officer John Salomone to oversee reform of NOPD private detail work.

July 24, 2012

Landrieu and U.S. Attorney General Eric Holder announce they’ve signed a sweeping consent decree mandating a host of reforms to the NOPD.

May 12, 2013

Gunmen open fire into a second-line on Mother’s Day, injuring 20 people.

Sept. 25, 2013

Serpas says NOPD is buying hundreds of “body cameras” to record officers’ every interaction with the public as an accountability measure.

Jan. 1, 2014

City closes out year with 155 killings, the lowest total in decades.

March 2014

Survey by New Orleans Crime Coalition finds 60 percent of Orleanians polled are satisfied with NOPD.

May 14, 2014

Inspector General Ed Quatrevaux releases audit, disputed by Serpas, saying NOPD misclassified dozens of rapes between 2010 and 2013.

Aug. 18, 2014

Serpas announces he is retiring to take a tenured teaching job at Loyola University.