NASA Barges at Michoud
Aerial view of NASA Dock at Michoud Assembly Facility with four barges, left to right, Paleamon, Promise, Poseidon and Orion. The barges ferried Saturn IB and Saturn V stages between the Marshall Space Center; the Michoud Assembly Facility; the Mississippi Test Facility, now Stennis Space Center; and the Kennedy Space Center.
From the test fire of the rocket engines at NASA 125,000 acres facility in Mississippi the results is a huge cloud of hydrogen and oxygen which causes it to rain!
Video uploaded by U Tube user GloverX