My first one in Invasion. I jumped off the spire with the core, somehow survived. And then the momentum from the landing skid me across to the back of a spartan. Suddenly, (probably because I "pushed" him) we were moving towards the edge, we couldn't stop. Just before I thought it was the end, I let go of the core and assassinated him. Mid-Air assassination, and because that attack my elite stopped skidding and I survived the fall .