Authorities have released new details following a deadly shooting at a Northrop Grumman building in Linthicum, Maryland, near Baltimore/Washington International Thurgood Marshall Airport, confirming the identities of both the suspect and the victim involved in the incident.
According to Anne Arundel County Police, the suspect has been identified as 26-year-old Dylan Blake Chandler of Pasadena, Maryland. Chandler, a contracted security guard at the facility, has been charged with first-degree murder, second-degree murder, and additional related offenses stemming from the fatal shooting.
The victim has been identified as Joseph Keith Aman, 37, of Baltimore, Maryland. Authorities confirmed that Aman, who was also working as a security guard at the time, succumbed to his injuries at the scene.
Incident Details
Preliminary findings indicate that the shooting occurred inside the Northrop Grumman facility following a dispute between the two contracted security guards. Investigators report that the confrontation escalated, at which point Chandler allegedly discharged his firearm, striking Aman and causing fatal injuries.
Police emphasized that the incident was isolated and did not involve any Northrop Grumman employees, noting that both men were contracted security personnel assigned to the facility.
A third contracted security guard is credited with intervening during the incident. Authorities say this individual disarmed Chandler and took him into custody until law enforcement officers arrived on scene. Police have praised the guard’s actions, stating that the intervention likely prevented further harm.
Investigation Ongoing
Anne Arundel County Police Homicide Detectives are continuing to investigate the circumstances surrounding the shooting, including the events leading up to the altercation and the nature of the dispute between the two guards.
While an arrest has been made and charges have been filed, officials stressed that the investigation remains active and ongoing. Detectives are reviewing evidence, conducting interviews, and working to establish a full timeline of events.
Authorities are urging anyone with information related to the incident to come forward. Individuals with information are asked to contact the Anne Arundel County Police Department at 410-222-4731. Those who wish to remain anonymous may call the Anne Arundel County Police Tip Line at 410-222-4700.
Community Impact
The shooting has raised concerns about workplace safety and security protocols, particularly at high-profile facilities near major transportation hubs. Police have reiterated that there is no ongoing threat to the public, and that the situation was quickly contained.
As the investigation continues, the community mourns the loss of Joseph Keith Aman, while authorities work to ensure accountability and determine the full circumstances behind the tragic incident.

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