We've had these blimps over our landlocked midwestern city. The largest ships in our area are 24' Sea Rays on a lake, nowhere near the gross tonnage that manda

We've had these blimps over our landlocked midwestern city. The largest ships in our area are 24' Sea Rays on a lake, nowhere near the gross tonnage that mandates use of AIS. We may have to accept that the true nature of these blimps is shrouded under layers of state secrecy, and all we have left is speculation based on observation.