Are there UFOs in dark orbit

UFO's (Or OVNI's as they are also known as) are admin controlled ships that fly around testing out bugs and glitches in the game.
Sometimes though, they are brought out mainly for the fun element in you shooting an admin to pieces.
Usually this doesn't happen, they are known to have anything from 8 mil HP + but there is the odd occasion that it does happen (Long time spent repairing for them).

Typically there is no set date for the UFO/s to come out into the maps but on certain servers there has been events where the moderator team get together in UFO's and invade maps to celebrate events.
This has been suggested for our servers but nothing has came of it yet - anything about a special event will be posted in the official announcements where you will be informed about it.