The Brief
- A loaded gun magazine found on a Frontier flight in Atlanta belonged to an FBI agent.
- The FBI says no one from its Atlanta office was involved.
- Passengers were deboarded and re-screened before the flight took off.
The loaded handgun magazine found on a Frontier Airlines flight at Hartsfield-Jackson Atlanta International Airport belonged to an FBI agent, according to sources.
What we know:
The gun was left on the plane Sunday and discovered by a passenger on the next flight.…