One summer evening in central Alaska (1991-93 not sure of the year) I heard a sound and felt vibration unlike anything I'd ever experienced before. As the roar and vibration grew, I went outside in time to witness a PB4Y2 water bomber fly directly (<1000') over the housing area on Ft. Greely to drop on a fire about 20 miles away. I remember thinking to myself that I'd probably not see anything like that again. I believe the aircraft I saw may have been this one:
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