Prior to his death, "Uncle Walter" hosted a number of TV specials and was featured in interviews about the times and events that occurred during his career as America's "most trusted" man. In July 2006, the 90-minute documentary "Walter Cronkite: Witness to History" aired on PBS. The special was narrated by Katie Couric, who assumed the "CBS Evening News" anchor chair in September 2006. Cronkite provided the voiceover introduction to Couric's "CBS Evening News", which began on September 5, 2006. Cronkite's voiceover was notably not used on introducing the broadcast reporting his funeral – no voiceover was used on this occasion.