Currently reading this book about continuity of government [1] and many Presidents have done the full exercise, including activating the older emergency alert s

Currently reading this book about continuity of government [1] and many Presidents have done the full exercise, including activating the older emergency alert systems in over the air TV. Other parts of these exercises include the emergency evac from White House to bunker or flying command post, testing comms with subs and other command authorities, and walking through response plan selection, and last, the process of launching the weapons. I don't believe it ever worked fully, and I hope that this test was part of one of these exercises. The book makes it clear that these plans are only updated every 10-15 years and almost never tested end to end, especially now that the cold war is over. 1: https://www.amazon.com/gp/product/B010MHAG72/ https://www.amazon.com/gp/product/B010MHAG72/