You can use ON SCREEN and BACK TO SCENE as ways to move from the scene to the screen. So for example:
INT. LIVING ROOM – DAY
Shirley watches the news.
An ANCHORWOMAN interviews an OLDER MAN.
How long have you planned to wait out the storm?
We’ve got enough supplies to last us three, four weeks even.
BACK TO SCENE
Shirley rolls her eyes.