A few times in Frontlines I've been hit by a dragoon using an ability that amazes me & I'd like to know more info as I'm not a DRG.

What happens is that I'll be near the top of an opponent's ramp in the Heliodome when the DRG suddenly drops from the sky straight on top of me. I've checked with team members who have been on the ramp, & at the bottom, at the moment the attack happens & they claim to have not seen the DRG at all. They aren't coming from behind me (I've watched) & not from the ramp so where are they coming from & what is the ability used called?

If I can find out it may be a useful tactic for my teammates to use.