First off, you really need to focus on the point that I and other posters are making: The TSA is charged with an incredibly important job and its use of overworked, under-trained, and under-paid employees not only subverts that mission but renders the mission vulnerable to corruption as this case in point proves.
Down on the bustling banks of the Niger in the port of Mopti - the Venice of Mali as the faded tourist posters call it - I find stacks of square white slabs flecked with grey.