Mrs. R. E. Black from Oklahoma City wrote a letter to Senator Mike Monroney expressing her concerns about the sonic boom tests being conducted by the Federal Aviation Agency in Oklahoma City. She is worried about the damage caused to homes, the impact on people's health, especially those with heart conditions, and the overall disturbance caused by the sonic booms. Mrs. Black urges the government to stop the tests and take action to protect the well-being of the residents.