(the longest tenure of anyone in Indianapolis television history); he joined channel 8 as a reporter in 1967 and was promoted to lead anchor in 1974, where he remained until his retirement from the anchor chair on December 1, 2004 (Ahern later hosted sister station WNDY's now-cancelled interview program One on One). Debby Knox joined Ahern as co-anchor on the weeknight newscasts in 1980 and remained with the station until she retired on November 26, 2013. Stan Wood served as the station's main weather forecaster from the 1960s until 1991, while Patty Spitler served as anchor of the noon newscast and entertainment reporter from 1982 to 2004. Lee Giles, who left the station in 2004, was one of the longest-tenured news directors in local broadcasting. For a time during the 1990s, WISH-TV advertised that "more people in Central Indiana get their local news from 24-Hour News 8 than from any other source" at the close of many of its newscasts and in promos for its newscasts. The station's local newscasts are currently at a distant second place behind WTHR in most timeslots, except during the 5 to 6:30 p.m. period on weeknights, when both stations maintain a much tighter viewership margin. However, due to the strength of CBS' prime time lineup in the 2000s and 2010s (as well as the fact its late news served the lead-in for Indianapolis native David Letterman's late night talk show on the network, the Late Show), WISH regained the lead in the 11:00 p.m. slot. The station's "I-Team 8" investigative reports have earned the station numerous journalism awards, including Regional Emmy, Peabody and Edward R. Murrow Awards (the station was awarded the latter in 1998 and 2006). In 2008, the Indiana Associated Press Broadcast Association honored WISH-TV with the "Outstanding News Operation" and "Outstanding Weather Operation" designations. In 1990, WISH-TV implemented the "24-Hour News Source" concept that was originally developed that year by WEWS-TV in Cleveland; the format, which began spreading to other television stations nationwide around that timeframe, involves the production of 30-second news updates that air at or near the top of every hour during local commercial break inserts – even during primetime network and overnight programming – in addition to the station's long-form newscasts in regularly scheduled timeslots. The station continues to use the format to this day (which is reinforced in the branding that the station has used for its