A silent tribute began at 4:30 p.m. - almost the exact time one year ago that gunfire rang out at the corner of Anamosa and Greenbriar streets. Members of the Rapid City Police Department's Honor Guard planned to keep watch at the site of the shooting until after dark.

The silent tribute pays homage to police officers Ryan McCandless and Nick Armstrong. The two men, along with Officer Tim Doyle, responded to a "nuisance call" at the intersection on the afternoon of Aug. 2, 2011. Police officials said they had been speaking to 22-year-old Daniel Tiger for about 10 minutes when Tiger pulled out a gun and started firing. All three officers were hit.

McCandless and Doyle were able to fire back, fatally wounding Tiger, but McCandless and Armstrong also suffered fatal injuries. Doyle was seriously injured but went back to work as a school liaison officer later that same month.

Fellow law enforcement officers, family and friends of those who were lost visited the memorial throughout the day. Police Chief Steve Allender said this week that the silent tribute is the kind of remembrance his officers would want.

-Julie Oberlander