Dec. 10, 2003: Along I-185, Metro Narcotics Task Force and Muscogee County Sheriff's Department stop and swarm GMC Yukon they believe contains armed men from Miami. Deputy David Glisson shoots Walker at 8:58 p.m. No guns or drugs found.
Dec. 11, 2003: Walker pronounced dead at 2:28 a.m. Then-Sheriff Ralph Johnson calls it "a tragic day for the family of the deceased and for my office and for the city of Columbus." Glisson placed on administrative leave.
Dec. 12, 2003: Johnson calls for GBI investigation. Ledger-Enquirer and WRBL file open records request for dashboard videotape, 911 tapes and Glisson's personnel file.
Dec. 15, 2003: Johnson asks FBI to investigate.
Dec. 22, 2003: Local ministers host "Crying Out to Become One" rally, demand thorough investigation.
Jan. 2, 2004: Black elected leaders also call for investigation, propose reforms such as citizens review commission to examine law enforcement misconduct.
Feb. 11, 2004: National news commentator Lou Dobbs features Walker case.
Feb. 19, 2004: Johnson concludes internal investigation, fires Glisson.
Feb. 20, 2004: District Attorney Gray Conger receives GBI investigation, recuses himself. Case reassigned to Dougherty County District Attorney Kenneth Hodges.
Feb. 24, 2004: In U.S. District Court, Walker family files $100 million lawsuit against sheriff's department, Johnson and Glisson.
March 2, 2004: Local Rainbow/PUSH Coalition President William Howell announces petition drive to recall Sheriff Johnson.
March 4, 2004: Attorneys for Warren Beaulah, Anthony Smith and Daryl Ransom, Walker's three companions, file in Superior Court to get videotape of shooting.
March 22, 2004: Judge Kenneth Followill refuses to reconsider a Jan. 8 ruling that records sought by Ledger-Enquirer are investigative files.
April 14, 2004: After viewing the video, Walker attorneys, including former Atlanta mayor Bill Campbell, ask judge to dismiss $100 million federal lawsuit without prejudice and say video provides ample evidence to expand lawsuit.
April 28, 2004: Sheriff Johnson announces re-election bid.
May 4, 2004: Columbus Council establishes Public Safety Advisory Commission.
May 6, 2004: Howell falls 29,000 signatures short trying to recall Sheriff Johnson.
June 2, 2004: U.S. District Court Judge Clay Land grants Johnson immunity in Walker civil suit.
Aug. 11, 2004: Hodges seriously injured in car wreck near Cordele, needs two months to recover.
Aug. 30, 2004: Campbell, Walker attorney and former Atlanta mayor, indicted on federal charges.
Nov. 2, 2004: Johnson and Conger re-elected.
Nov. 23, 2004: Hodges allows Glisson to testify to grand jury without swearing oath to tell truth. Grand jury returns no indictment, provoking storm of outrage.
Nov. 30, 2004: NAACP files suit challenging whether Hodges legally allowed Glisson to make unsworn statement.
Dec. 1, 2004: City releases dashboard video of shooting.
Dec. 10, 2004: Walker family files $100 million lawsuit in Muscogee Superior Court against Muscogee County, Sheriff Johnson and Glisson.
Dec. 13, 2004: Beaulah, Smith and Ransom file $3.5 million lawsuit against city, sheriff, Glisson and deputies Jonnie Ellerbee, Robert Taylor, Allen Humphrey and Rusty Blair.
Dec. 20, 2004: The Rev. Jesse Jackson calls for people to "disinvest" in Columbus businesses.
Dec. 22, 2004: Walker's suit moved to U.S. District Court.
Jan. 10, 2005: Jackson backs off call for Columbus disinvestment.
Jan. 11, 2005: About 150 people gather at Government Center to march in support of Glisson.
Jan. 15, 2005: Around 8,000 people rally for justice for Walker family during MLK weekend. Civil rights leaders Joseph Lowery and the Rev. Jackson attend. Speaker is TV Judge Greg Mathis.
Jan. 24, 2005: Glisson responds to Walker suit, seeks qualified immunity and states Walker's conduct was the "proximate cause" of his death.
Feb. 1, 2005: Glisson attorney Richard Hagler says Glisson won't appeal firing because he's having surgery for heart condition.
Feb. 18, 2005: Local black leaders ask supporters to show displeasure by abstaining from purchasing anything in Columbus April 28-May 1.
Feb. 21, 2005: Georgia Supreme Court rules no violation of Georgia's Open Records Act occurred in Walker case.
March 17, 2005: Michael Undrea Powell, one of three men later arrested in connection with the drug investigation, pleads guilty to possessing cocaine with intent to distribute, sentenced to eight years in prison.
April 20, 2005: Superior Court Judge Frank Jordan Jr. dismisses NAACP suit seeking to force Hodges to again present the Walker case to a grand jury.
May 15, 2005: During NAACP rally, Walker's widow Cheryl says she's determined to fight on.
May 16, 2005: Kayla Walker, age 3 when her father died, turns 5.
Dec. 11, 2005: Friends mark anniversary of Walker's death at Lakebottom Park, where Rotary Club of Columbus plants a "Unity Tree" near the bandstand.
May 1, 2006: City of Columbus files motions in federal court claiming immunity for city government, sheriff and deputies.
July 7, 2006: Walker's mother Emily asks Public Safety Advisory Commission why city claiming immunity in her son's death.
Aug. 16, 2006: Reports reveal Columbus Council privately discussing settlement for Walkers.
Aug. 31, 2006: U.S. District Court Judge Clay Land rules city and sheriff entitled to immunity but denies it for Glisson and Metro Narcotics agents Rick Stinson and Jim Price based on what confidential informant claims he told them.
Oct. 11, 2006: To 11th Circuit Court of Appeals, Cheryl Walker appeals Land's ruling that Stinson and Price may be liable for detention of Walker and companions, but not for Walker's death.
Nov. 7, 2006: Jim Wetherington defeats incumbent Bob Poydasheff in Columbus mayor's race.
Dec. 10, 2006: About 80 people gather at Lakebottom Park to mark anniversary of Walker shooting.
Jan. 16, 2007: Columbus Council votes to settle lawsuit brought by Walker's companions for $125,000.
July 20, 2007: Federal investigators announce they find insufficient evidence to charge Glisson with violating Walker's civil rights.
Aug. 9, 2007: Judge Land decides FBI evidence secretly presented to federal grand jury is critical to the Walkers' civil suit and must be heard.
Nov. 6, 2007: Court filings show confidential informant used in drug investigation that led to Walker's death lied in 2006 affidavit filed with Walker's civil suit. That affidavit figured prominently in Land's decision to deny immunity to Stinson and Price.
Dec. 27, 2007: Having decided informant lied, Land indicates he'll alter ruling on immunity for Stinson and Price if 11th Circuit sends case back.
Feb. 14, 2008: 11th Circuit sends case back, and Land grants immunity to Price and Stinson. Glisson remains only defendant in Walker suit.
March 13, 2008: Walkers appeal Land's decision to 11th Circuit.
April 23, 2008: Mayor Wetherington asks attorney and former mayor Frank Martin to help reach settlement with Walker family.
Aug. 12, 2008: Columbus Council votes to settle with Cheryl Walker for $200,000 to be placed in trust for Kayla. Anonymous donors add $250,000. Former Metro agent Jim Price has insurance that adds $60,000 to settlement.
Sept. 9, 2008: Columbus Council votes 6-5 against giving Public Safety Advisory Commission power to investigate law enforcement complaints, with Wetherington breaking tie.
Oct. 23, 2008: Judge Land signs order ending lawsuit.
Oct. 26, 2008: With lawsuit settled, Sheriff Johnson, facing challenger in general election, says he was "shocked" grand jury didn't indict Glisson.
Nov. 4, 2008: With voters drawn to polls by Barack Obama's bid for president, Johnson loses to John Darr and Conger loses to Julia Slater.
June 17, 2009: In Columbus to campaign for Democratic nomination for Georgia Attorney General, Hodges says he was surprised grand jury didn't indict Glisson at least for involuntary manslaughter.
March 10, 2010: Georgia Senate passes legislation requiring witnesses before a grand jury to swear an oath.
April 29, 2010: Georgia House passes grand jury bill, which goes to governor for his signature.
May 11, 2010: NAACP attends Hodges campaign rally at Government Center to condemn his handling of Walker case.
July 9, 2010: TV ad airs featuring Emily Walker endorsing Hodges' opponent, Georgia state Rep. Rob Teilhet.
July 20, 2010: Hodges defeats Teilhet in Democratic Primary.
Nov. 2, 2010: Hodges loses general election to Republican Sam Olens.
Nov. 30, 2010: Teresa Tomlinson wins mayor race in runoff against Zeph Baker.