Check out this 9/11 memorial chalk drawing by Scottish artist Willie Gardner w/Twin Tower and jetliners that seems to feature a portrait of Christina Taylor Green, the young girl who was shot dead during the assassination attempt on Rep. Gabrielle Giffords this year in Tucson, Arizona:

[link to thespiritoftruth.blogspot.com]

The only thing is....the sketch was made in the late-1980's, well before 9/11, and the artist died last-November, before Jared Loughlin's mass shooting spree in January.