SPARKS – A Sparks Middle School math teacher who was killed Monday while trying to stop a shooter was being remembered as a hero. The teacher, Michael Landsberry, a 45-year-old Marine veteran who just celebrated his wedding anniversary on Oct. 18, tried to intervene before a seventh-grader opened fire with a semi-automatic handgun he had brought to school. Landsberry and the student both died in the incident. Police said the shooter took his own life. Two other students were injured.