Did more testing:
-it works with Valkyrie same as with Vindicator
-it works on your own units too
1. Give your newtons an attack order on your unit (preferably the unit is out of newtons range so they don't start shooting yet).
2. Pick up the unit with air transport.
3. Fly over your newtons so they can shoot the transported unit.
4. Unload the unit elsewhere.
5. Watch it flying into orbit!
(or more likely immediately exploding after colliding with tranport or ground)
Unit needs to be UNLOADED from the transport for the sudden mipulse effect. If you kill the transport instead the unit will fall to ground normally without anything strange.