The photo from an al-Qaida magazine shows a people mover at SFO and has a caption that reads, "assemble your bomb."
The San Francisco Chronicle reports the picture caught the attention of Congressman Eric Swalwell at a Homeland Security hearing in Washington D.C. Wednesday. Swalwell raised a red flag over what he called extremist propaganda.
The TSA says it does not believe there is any threat at this time and thinks the image is just a stock photo.
