(CNN)--A Southern California company says it's been threatened... by al-Qaeda.
This is the exterior of AeroVironment in Monrovia, just northeast of Los Angeles.
The company makes military spy drones.
A sign used to be on the upper corner of the building... and it has now been removed.
It's part of the beefed-up security the company says it has put in place.
Local and federal officials are working together to keep the company-- and the people who work there-- safe.
The threats were reportedly sighted on a Jihadist website.
1908 Grand Avenue, Wausau, WI 54403
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