Recently while I was checking on my Belle Isle Tower cache, I heard a strange beeping from a plane flying overhead. I decided to record it and try and figure it out.
After sitting down and transcribing it for a few moments, I knew what it was talking about, but what was it with regards to?? As I began wondering what I could be missing, I noticed that a skywriting plane was producing what seemed like a bunch of random letters in the sky overhead. Hmm, I wonder!? I snapped a quick pic of it.
You can validate your puzzle solution with certitude.