Maybe the photos will be spit wad magnets. ;-)
Someone who had served in the Pentagon told me about an `additional duty’ there that no one wanted. Along one corridor traveled mainly by field grade officers and above there was the required chain of command photo board, from the President down to one’s immediate boss.
Every morning someone had to take Windex and paper towels and clean the spit off the photo of the POTUS and occasionally others as well.
Oh... forgot to mention, this was during the Jimmah Carter administration.