Police on Capitol Hill are baffled by an attempted robbery that began with a handgun put to the head of a teenager and ended in a group hug. It started about midnight on June 16 when a group of friends was finishing a dinner of marinated steaks and jumbo shrimp on the back patio of a District of Columbia home. That's when a hooded man slid through an open gate and pointed a handgun at the head of a 14-year-old girl. "Give me your money, or I'll start shooting," he said, according to D.C. police and witnesses. Everyone froze, including...