And they have a crew of Lloyd Bridges' sons to go under the water and paint those flags onto the lane bottoms at the end of the swim races, too. And they work so fast, you never even get a glimpse at 'em.
I remember the first time I saw a rugby game after they started painting big adverts on the field. I thought it was CGI, 'cuz the ads are angled to fit the camera movement from the midfield position, obviously for the TV viewer. About twenty minutes into the game I remember thinking how crappy it was that they only had one ad and didn't change it through the whole game. I figured they either had a rich sponsor who demanded exclusivity or had trouble drawing sponsors. And then some guy gets tackled and gets up with half the logo on his jersey.