User blog comment:Demons of Hræsvelgr/Mysterious Ridgeback Squadron/@comment-2094030-20131016162324

They could have something to do with the Fandance UCAV (QFA-44). Maybe they got taken down by it later. In Ulysses disaster trailer, the score race between Ridge and Bone wasn't present. (Look at the left side), but they are still present (their white icons are still present).