Great sign for Team USA Gymnastics ... Simone Biles just crushed the most difficult vault in existence during Olympic practice on Thursday -- and she made it look easy!!
The four-time gold medalist participated in the Red, White and Blue's practice sesh ahead of the 2024 Paris Games ... and based on the footage of the run-through, the rest of the world is in big trouble.
View this post on Instagram
Biles went through the floor and beam routines .