"I feel strongly it was a missile launch," Johnson said at the time.
But Tom Mills, a spokesperson for NAS Whidbey Island, said it wasn't a missile launch from the facility. There are no missile launch capabilities on the Navy base at Whidbey Island.
In fact, Navy workers are wondering what it was, too.
Johnson tweeted that a helicopter pilot with the Airlift Northwest ambulance service said on Wednesday that his chopper has a searchlight that was pointing straight down when he took off -- and that's what left that vertical light streak in the sky.