"I could tell right away that the sirens didn't sound like the normal tornado siren. It had the up-and-down pitch of an air raid or an attack siren," added Behnke. That's exactly the tone ...

"I could tell right away that the sirens didn't sound like the normal tornado siren. It had the up-and-down pitch of an air raid or an attack siren," added Behnke. That's exactly the tone ...

Ukrainian defenders, they added, remain determined to bring the number of air raid alarms down to zero. Read also: Ukraine's air defense downs 47 of 72 Russian drones, 24 more fail to reach ...