Virtual news sets are awesome, your Anchors can appear to be standing on a set made out of the world's most expensive marble, while laser beams fire in sequence in the background.

 But there is a downside.

When the technical difficulties hit, you're just standing in front of a green wall and the viewers see firsthand that the Wizzard of Oz is just a big phony. 

Screenshot from Tegna's Jacksnville station.