The Flaherty family brings carnival rides to 42 towns a year. All four generations of them.
Photographer Roger Vail has been making carnivals his photographic bread-and-butter since 1971 and shows no sign of stopping.
"Nobody just goes down to Skid Row and says, 'Hey we love you.' Nobody goes down there and just has a party for them."
Very intense, uncomfortably strange inner sensations can be experienced as joyous and delightful.