Years ago, an object was found in the Baltic Sea between Sweden and Finland that prevents many enthusiasts looking for evidence of the presence of extraterrestrial civilization on Earth.

The object resembles a Star Wars space ship owned by Han Solo (Harrison Ford):

Already at the first discovery, the army was interested in the matter, and some of the information was embargoed on the grounds that it was a sensitive matter, and it would not be appropriate to spy out unsubstantiated reports.