Elizabeth Smart’s father explains why Nancy Guthrie’s family went public with plea to abductors

The family of Nancy Guthrie, the mother of "Today" co-host Savannah Guthrie, released a public plea to potential captors for proof of life after she went missing Saturday. Ed Smart, whose daughter Elizabeth was kidnapped in 2002, said the video’s release is likely strategic.

"Talking directly to those that have taken her, the abductors, is crucially important," Smart said Thursday on "Fox & Friends." 

"That they know that they're trying to comply with everything that's being said...