[30] is a reminder about 'done in 30' which was 30 months, but i also speculate 30 days.

Go back to 8/11, the 'nation wide EAS test'

30 days later is 9/11

I think this drop is a reminder were in the midst if the final phase, the 'precipice'.

That's going to end on 9/11

With 'a parade that will never be forgotten'

Which is a reference itself to 9/11 if you recall the phrase that was constantly used after 9/11 'a day that'll never be forgotten'.