It parallels nicely with the opening Launch Warning sequence from
WarGames.
Also, if you have the time, watch this:
https://youtu.be/WLNTJ6LUuUk
What's interesting is that he talks about being able to make phone calls home out of the LCC and getting TV signals, etc.
I can't surmise having to sit in there, waiting the 20-30 minutes for the end of the world, able to talk on the phone with loved ones. Comforting or horrifying, I'm not sure which it'd be.