Rolling!!!

This morning Caleb was on the floor on his back and when I looked back at him, he was on his tummy!!! This is the first time he rolled from back to tummy!!! He has rolled from tummy to back before...I HAD to see it for myself and I spent a long time trying to get it on video!!! Finally, he did it again!!! Yea!!! He tries... and tries... but his arm always gets stuck!!!