9:41 PM: Seattle Fire is sending a water-rescue response, land and sea, to the 4800 block of SW Brace Point Drive [map]. Dispatchers say someone called in saying they saw someone “parachute into the water” south of the ferry dock. Updates to come.
9:47 PM: Responders have arrived in the area. No confirmation yet whether anyone is indeed in trouble. They’re also looking from the ferry dock.
10:03 PM: They’re still searching.
10:05 PM: Calling off the search after failing to find anyone plus “multiple reports this was a heat lantern.”
10:15 PM: Comments suggest the lanterns in question were “sky lanterns.”