Thought this was a cool part of the article:
The acoustic sensors gather uncharacteristic sounds from the environment before artificial intelligence is used to establish whether anomalies are incoming kamikaze drones or missiles.
Dr Thomas Withington, an expert in air defence at the Royal United Services Institute said: “It’s interesting that this technology is making a comeback because it was all the rage before the invention of the radar in the 1920s and 1930s
“History, in a sense, comes full circle, but with the adaptation of the technological age that we have today.”