How David Muir and Elizabeth Vargas Are Celebrating 20/20’s 40th

By Chris Ariens 

ABC’s Elizabeth Vargas and David Muir will participate in the ceremonial lighting of the Empire State Building tomorrow morning to celebrate the 40th season of ABC’s 20/20.

Vargas and Muir will flip the switch to illuminate the building, which will shine in blue and white in honor of the show’s historic season.

The first episode of 20/20 aired June 6, 1978.