Overview
- Park staff cleared visitors and closed the site before 1 p.m. Friday, then reopened the gates Saturday morning after removal operations concluded overnight.
- The Baltimore Police Hazardous Device Team and U.S. Air Force Explosive Ordnance Disposal technicians worked for hours to extract the device.
- Officials shut off gas in the area and warned nearby residents about a potential loud noise during the operation.
- No injuries were reported, and all visitors and employees were moved outside the immediate area, according to the National Park Service.
- Police said the cannonball was not modern, and it was transferred to federal agencies for continued observation after removal.