The Ohio Valley Medical Center in Springfield, Ohio, is prepared for an active shooter, according to an article on the WTRF website.
The first step is to lock down the hospital and issue a code yellow.
Five senior staff members will start splitting up roles and the planning sections chief starts to notify staff. Nursing staff assigns triage rankings, and rushes patients to the trauma center.
The finance chief checks on supplies, making sure there is food available at the hospital for increased visitors.
The hospital works off an action plan that local agencies would use, the article said.
Designing for Distraction: Benefits for Children, Families
Staffing and Consolidation Reshape Outpatient Facility Strategies
Adams Health Network Falls Victim to Phishing Attack
Ventilation and Filtering for Infection Control 
ChristianaCare Opens Aston Campus Neighborhood Hospital