Authorities say it's another Fourth of July warning. Deputies in Johnson County say a Swisher mom is recovering after a fireworks shell exploded and injured her legs. The Johnson County Sheriff's office says it happened Saturday Night in Swisher when a fireworks shell fired off sideways, and exploded in front of 36-year-old Margaret Limkemann and her daughter. Friends say Limkemann will require several surgeries and months of therapy to recover from a broken femur and other injuries.