A memorial honoring four Lakewood police officers — Sgt. Mark Renninger, and Officers Ronald Owens, Tina Griswold, and Greg Richards — killed Nov. 29 in Parkland began at 1 p.m. today in the Tacoma Dome. For photos of the procession leading to the memorial, visit the Tacoma Daily Index’s blog at http://i.feedtacoma.com/TDI-Reporters-Notebook/ .