Watching the news and hearing the air raid sirens going off constantly in Ukraine, it has made me curious.
Do we have them installed in major cities in the UK? Would they go off if we detected an invading aircraft? Are they sitting there ready to go if a threat occurs, or do the military bring them in if we think we're likely to need them?
How do they work? Does someone get information about an incoming aircraft and switch them on?
I think they're incredibly haunting and I can't imagine how frightened the poor people of Ukraine must be hearing them go off constantly