Boston Logan International Airport officials have apologised for holding a fire drill - complete with smoke and flames - on the 12th anniversary of the September 11 attacks.
The airport announced on their official Facebook page that they would be carrying out the drill today which drew widespread criticism on the social networking site.
One Facebook user wrote "how clueless and insensitive can you be", while another said "talk about out of touch."
Only two hours before the fire drill post, the Boston Logan International Airport's Facebook page said "Remembers" in relation to the attacks.
The Massachusetts Port Authority, who runs the airport, released a statement saying that it "apologises for conducting the fire training exercise and understands that it may have offended many of those touched by the events of September 11."
The two hijacked planes that hit the World Trade Center towers flew out of Logan airport.