CLEVELAND — This is only a drill.

University Hospitals Cleveland Medical Center conducted a disaster drill Wednesday morning to “simulate a significant surge in patients to both the adult and pediatric emergency departments.”

Approximately 65 people were used to act as patients with a variety of injuries throughout the three-hour drill.

“UH conducts disaster preparedness drills on a regular basis to practice the medical center’s readiness in the event of a real disaster,” officials say. “This year, the drill is being held in advance of next month’s Major League Baseball All-Star Game programming July 5-9 in downtown Cleveland should emergency services be required.”

Local law enforcement departments are aware of the drills.