Who is Staff Sergeant Matt Eversmann from Black Hawk Down: A Story of Modern War and what is their importance?

Staff Sergeant Matt Eversmann was a Ranger. On October 3, Eversmann found himself in charge of his small chalk by default. Eversmann's previous leader was sent home and the man's replacement was taken out of commission by a seizure. Eversmann was nervous before the mission began that afternoon because he had never wanted to be in charge of the lives of the men around him.