NORFOLK Chester Szymecki Jr. was waiting for some music to start at Harborfest when a sheriff's deputy approached. It was a warm June afternoon, and thousands of people wandered on and off the tall ships moored around Town Point Park. Szymecki had come from Yorktown with his wife, their three children and two children from their neighborhood. Szymecki had brought along something else, too - a .45-caliber handgun in a holster on his belt. The deputy asked Szymecki whether he was a police officer. He said no. And then, he said, uniformed city police began closing in. They gave him...