I don't agree with a word. ;-)
The song is warning about how things are all on the verge of falling apart.
Musically the band does a fantastic job of evoking that, moving between a feeling of unease and a sense of panic.
The Taaaam-Tam-Taaam part is the siren, the flashing red light, where the band gets in your face a shouts "wake up!"
I think the guitar makes a huge comeback here after being ignored on Signals. Alex alternates jarring chords with up-and-down runs during the verses that say 'things are moving here and something is not quite right.' And the bit he repeats on the chorus has a great hook. The vocal melody is not the song's strongest part, but it is plenty good. The chorus grabs me and the musical catchiness is excellent. I find the instrumental break outstanding.
And the composition is near perfection with the way it builds and shifts and knows when to hit the gas pedal.
It's just a swirling river that ebbs and flows and drags me in to frenzy of air band playing.
As the sound of the last chord falls away I inevitably find I have to take a deep breath - a moment to gather myself again because the song consistently takes me away.
It has everything Rush does well. And if I were to do a list of my top songs ever, by any band, it would be on it.
Just my two cents,
(Well, more like two hundred cents, I guess).