On the afternoon of January 28, 2026, a workplace dispute at a Northrop Grumman facility in Linthicum Heights, Maryland, ended with the death of 37-year-old contracted security guard Joseph Keith Aman of Baltimore. Aman and another guard had called a fellow contracted guard, 26-year-old Dylan Blake Chandler of Pasadena, into an office to discuss negative performance issues that court documents say were likely to lead to Chandler’s termination. Chandler allegedly produced a firearm and shot Aman.

A third guard in the office heard the gunshot, saw Chandler holding a gun and Aman on the floor, then disarmed and restrained Chandler until police arrived. Aman died at the scene. Maryland Transportation Authority Police initially secured the facility on Aviation Boulevard near the Baltimore-Washington International Thurgood Marshall Airport; Anne Arundel County Police homicide detectives took over and recovered the weapon. Chandler was taken into custody and charged with first- and second-degree murder and related counts. Authorities described the shooting as an isolated incident.

Does anyone have information about Aman’s work at that facility or saw events that afternoon that could help the ongoing investigation?