Minneapolis firefighter Genevieve Hansen gave stirring testimony on Tuesday, the second day of the murder trial of Derek Chauvin in the killing of George Floyd last year. In her testimony, Hansen said she was off duty and walking home from a community garden when she heard a woman screaming that someone was being killed. As a firefighter, she is also a trained emergency medical technician, and when she arrived at the scene she immediately knew Floyd was in danger. She said she approached now-fired officer Tou Thao, who was holding back the crowd, about performing CPR on Floyd to save his life. "I had already assessed that [Floyd] was in an altered state of consciousness. What I needed to know was if he had a pulse. He wasn't moving, and he was cuffed. And three grown men putting all of their weight on somebody is too much. The first thing that concerned me was his face was smushed into the ground. Swollen. It appeared swollen to me," she said. She approached Thao, who allegedly...