From the blog:
Have you always wanted to learn how roller coasters work? For Disney Mechanical Engineers, Angel and Josh, it was their curiosity at a young age in STEM-based subjects where they found their passion for roller coasters. Angel and Josh work behind-the-scenes at Disney and had the opportunity to put their math, science and engineering skills into action on one of Disney’s fastest coasters – Rock ‘n’ Roller Coaster at Disney’s Hollywood Studios.
Read more from Disney Parks Blog.