Al-Qaeda mag calls on followers to 'assemble bombs' to attack US airports

In a new issue of online English-language magazine, Inspire, al Qaeda is calling on its followers within the U.S. to attack American airports.

A picture of San Francisco International Airport and the AirTrain at SFO are prominently featured in the spring issue of the propaganda magazine.

Below the photo, a caption in Arabic reads, 'stand up, pack your tools of destruction. Assemble your bomb, ready for detonation,' CBS News reports.

According to the report, the AirTrain connects all the airport terminals with the Bay Area Rapid Transit light rail system, known as BART, terminal garages and the rental car center.

The FBI however insists that there is no specific threat to the San Francisco Bay area.