Paul Morse, a Times photographer, his dad, John, 62, and 2,600 others bicycled in the California AIDS Ride 5 last week, a 560-mile, seven-day fund-raiser. Morse's pictures from the trip provide a glimpse into the emotion of the ride, and the help of dedicated volunteers. "Riders will return to the bottom of a grueling milelong hill to ride next to and support slower riders," said Morse. He was inspired to participate by his father, who rode last year. "Riders who have finished the day early will stay and cheer late arrivals who are coming into camp. These are the moments that make finishing the day possible." Organizers expect to raise $9.5 million for research and support programs.