Strapped in on a two-seat microlight airplane, big brother Michael McMahon took his little brother Robbie, who has Williams Syndrome, up in the skies for the first time.
From the video above uploaded on Youtube, Robbie undoubtedly had the time of his life on his first ever flight, grinning all the way from takeoff to landing and exclaiming "happy" every chance he gets.
Michael writes in the video's description that it was an "honor" taking his brother flying with him.
Williams Syndrome is a rare developmental disorder caused by missing copies of several genes. It's characterized by medical problems, developmental delays, and learning disabilities. Unlike other developmental disorders, children with William's Syndrome tend to be highly social and friendly.