Viewing the YT on a Wide Screen (65", full screen), it becomes visible:
- Just after lift-off, no climb, but seemingly speed-increase.
- Then, the airplane goes in a very steep climb.
- When in the steep climb, it is visible, the speed significantly decreases.
- Subsequently, a near 45 degrees bank-angle, with even more speed decreasing.
- Subsequently, less climb, wings get level and momentarily a level off.
- Subsequently, the airplane starts mushing down.
- And then a wing drop.
Looks to me a demonstration, "this is how we do this in the military, with high performance jets".