Well they tested the nuclear/missle attack warning sirens in Hawain cities for the first time in a very long time last month. Just because the sirens were installed during the cold war doesnt make the new attention and urgency being given to them is any less new. Same with the underlying infrastructure behind cell phone alerts being old while the systems on top are being newly revised and tested.

Clearly there is a whole bunch of new attention being paid towards this.

And rightfully so given the provocations from NK and the general decline in maintenance/quality of the US nuclear and ICBM weapon systems.