Authorities investigating the disappearance of “TODAY” co-anchor Savannah Guthrie’s mother on Thursday provided a timeline of the night she went missing as the search for her stretched into a fifth day. The timeline was among the most precise information provided by Arizona law enforcement officials since Nancy Guthrie was reported missing around noon Sunday, setting off a desperate search that now includes both state and federal agencies. Pima County Sheriff Chris Nanos, speaking to reporters