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Yeah, the moment I read your comment I knew this could only be one place and time.

I was transported back to my 8 year old self learning about speed of sound by looking at smoke appearing in the distance and counting seconds until I hear the explosion and multiplying by 300 to get the distance.

Also learning the different sounds explosions make depending on where they land (soft ground, hard target, different calibre or type of munitions)..




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