” In 2004, according to a Seattle police report, Mr. Alexis walked out of his grandmother’s home one morning, pulled a .45-caliber pistol from his waistband and fired three rounds at a construction worker’s car, two at the rear tires and one into the air.
During his time in the service, he exhibited “a pattern of misbehavior,” Navy officials said, though they declined to elaborate. Upon leaving, he became a Navy contractor. At the time of the shooting, Mr. Alexis worked for a company affiliated with Hewlett-Packard that serviced the Navy’s Internet system, Hewlett-Packard said in a statement. He had been living for weeks in a long-term-stay hotel with colleagues to work on the Navy Yard project, according to a government official.
In 2010, Mr. Alexis was arrested in Fort Worth for discharging a firearm. At the time, Mr. Alexis had been living in an apartment complex called Orion at Oak Hill. His upstairs neighbor called the police after she heard a pop, saw dust fly and noticed holes in her floor and ceiling. She told the police that Mr. Alexis had confronted her in the parking lot about making too much noise, and she felt threatened by him, according to the Fort Worth police report.”