I hear an alarm, should I feel alarmed?

I hear an alarm, should I feel alarmed?
After numerous threats of bombs,
All as empty as the cry "Wolf!"

After the last time something happened
Every inslight gesture of more than two
Warranted alarm; for had it happened
Again no solitary two could bare it alone.

The distress from distress not felt
In the siren which people treat as silent,
Silent since sirens rang them tired.