Security expert Dan Donovan is weighing in on possible next steps as the search for Savannah Guthrie's mom, Nancy Guthrie, continues. "The 5 p.m. deadline isn't the end of the clock - it's the start of the most dangerous window," Donovan, founder and managing partner of security and risk management firm Stratoscope Holdings, exclusively told Us Weekly on Monday, February 9. "Deadlines in ransom notes are often less about money and more about control.