NFPA standards, supervising divers in varying conditions and interagency operations are some of the topics covered. Like all ERDI courses, ERD Supervisor is OSHA and NFPA compliant. In addition, the ERD Supervisor course serves as a base to develop leadership qualities and future ERD Instructors. During the open water training segment of the course, some of the skills ERD candidates will demonstrate mastery of are search patterns, proper evidence handling techniques, incident command and supervision of the scene from initial arrival through final debriefing.