Jason strength

From the corner of her eye, Diana glimpsed movement, but her mind refused to believe what she was seeing.  Someone was clinging to the wing of the plane.
Jason was clinging to the wing of the plane.
Impossible.  No mortal had that kind of strength.  But as she watched, he pulled himself over the side and launched himself back into the jet.
He slammed into the helmeted soldier, knocking his knife free, and with one swift gesture snapped his neck.