From MPD:

Date of Death: February 5, 1997
Rank: Officer
Age: 28
Years of Service: Seven
Marital Status: Married
Children: Two
Location of Death: Georgia and Missouri Avenue, NW

On Feb. 5, 1997, at 3 am, Officer Brian T. Gibson, 27 was ambushed and shot to death while in full uniform sitting in his marked patrol car at a traffic light outside the IBEX Nightclub at Georgia and Missouri Avenues, NW. Within three minutes after the shots were fired, members of the Fourth District apprehended Marthell Nathaniel Dean, who had been escorted from the IBEX club by an off-duty officer just prior to the shooting. Dean was found guilty of First Degree Murder and is currently serving a life sentence without the possibility of parole.

And from the 4D Listserv:

We have spoken to the family of Master Patrol Officer Brian T. Gibson. They would love to have as many of you as possible join Sunday morning’s Candlelight Vigil to remember the life of their loved one and our law enforcement brother, former Fourth District officer, MPO Brian Gibson, who was tragically killed in the line of duty 15 years ago, just blocks from the station.

You are also welcomed to visit the station over the next few days to send uplifting messages to his family by signing the memorial book.

Here are the details:
Memorial: 15th Anniversary Candlelight Vigil (In Memory of MPO Gibson)
Time: 3am (gathering 20 mins early)
Date: (Sunday Morning- Feb 5th)

Location: Family, friends & colleagues will meet at 2:40am at the Fourth District Station and will walk a couple of blocks to the spot to share memories. Light reception to follow at the station, sponsored by the Fraternal Order of Police.

Those who are able, please set your clocks for 2am, Sunday morning for this special event.