Ellsworth Air Force Base in South Dakota is currently in a lockdown status due to reports of an active shooter on or near the installation. The situation began developing around the reporting window, prompting security forces to respond and advise personnel to shelter in place. Initial reports via text messages obtained by CBS News indicated "No Active Shooter. Shots in the area of base/off base." However, subsequent reporting by CBS News described the situation as a "real-world active shooter," according to a tweet from Jim LaPorta. Security forces are actively working to address the situation, as confirmed by an updated text message obtained by CBS News. The exact timeline of the incident's commencement is not specified in the provided updates, but the alert was issued during the early morning hours of September 12th. The base lockdown is an ongoing measure to ensure the safety of personnel. The previous report from Annapolis detailed a security incident at the U.S. Naval Academy on September 11th that resulted in a midshipman's injury after mistaking law enforcement for a threat. That incident, which occurred between 11:16 PM and 11:31 PM UTC, led to a campus-wide lockdown that has since been lifted, with Governor Wes Moore's office confirming no ongoing threat. The circumstances at Ellsworth Air Force Base appear distinct from the events at the Naval Academy.