So I was in South Korea on March 14, by the War Memorial of Korea and the Yongsan Garrison and heard what sounded like an air raid siren. I did a Google search. Apparently I wasn't the only one that heard this:
My question is... what was this? I'm pretty sure there wasn't a surprise attack by North Korea. Do they conduct periodic city-wide or nation-wide drills from time to time?
I also saw a fighter jet flying north (as determined with my compass)