Federal agents raided a manufacturer who supplies defense contractors in south Everett on Tuesday.
Witness said agents from the FBI and Naval Criminal Investigative Services (NCIS) stormed J.L. Manufacturing around 1 p.m. Tuesday afternoon.
The business is an aerospace manufacturer that makes lightweight, hard metal plates for airplanes.
On its website, the business lists Boeing, Lockheed Martin, and other major defense contractors as its customers.
Calls and emails to the business were not returned.
The FBI would only say the activity was part of an ongoing investigation.