I'm on a flight to/from the Caribbean on a single engine Cessna and I crossed the ADIZ (Air Defense Identification Zone) line. I haven't filed a flight plan, I don't have clearance from ATC, and I'm not in contact with ATC. I do have mode c transponder active on ALT and code is 1200 (VFR) and my altitude 6500 ft MSL.
The ATC would see the aircraft, its altitude, and its velocity. Based on this flight data, ATC would most likely conclude this was an ignorant or lost pilot or lost drone, and no threat posed. Have there been any instances where military or coast guard air craft were actually sent for interception of such small and slow aircraft? What are the statistics on this? What would the fines and penalties be? I'm assuming this would apply more when entering the US ADIZ than exiting.