EMPLOYEE STATED WHILE REPLACING AN OIL FILTER ON THE #2 COMPRESSOR AT THE MISSISSIPPI VERTICAL, THE EMPLOYEE FELT AND HEARD A POP IN THE UPPER RIGHT ARM. THE INCIDENT OCCURRED OCTOBER 3RD 2019. FROM DIAGNOSIS, ON 12-31-2019 THE DOCTOR HAS RECOMMENDED SURGERY. THE SURGERY DATE IS TBD TO FIX RIGHT SHOULDER.