In an event that the Tenth Doctor described as an "alien fender-bender" (PROSE: Peacemaker), a Nedenah ship was damaged and crashed to Earth. The humanoid aliens were later made infamous by UFO lore as "the Greys". (PROSE: The Devil Goblins from Neptune)
Three survivors were taken by the American government to a secret base to be studied. The Americans who discovered the ship were able to strip it for parts, and created many new devices derived from the technology. Broadband internet was derived from a mileometer found in the crash. (TV: Dalek) They were also able to reverse engineer and recreate the schematics for the ship.
Androvax, an enemy of Sarah Jane Smith and the Judoon, stated that the ships that the Nanoforms were building for him was a recreation of the spacecraft that had crashed in Roswell. (TV: Prisoner of the Judoon)