There was a similar incident in Seattle last year. A float plane who's pilot was unaware of the President being in Seattle for a fund-raiser wandered into restricted air space causing two jets to be scrambled from Portland. The resulting sonic bombs over populated areas set off quite a scare.
Going by TV news footage the pilot spent quite a few hours sitting at a table in the float plane airport with a Secret Service agent going over his flight plan, background and licenses.
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--Mobilis in Mobili--
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