Original image is from this page, and was released under Creative Commons Attribution 2.0 Generic (CC BY 2.0), which allows for the image to be shared and adapted as long as appropriate credit is given, and the changes made are pointed out - In this case, the edit I made to the image was the addition of the phrase 'Salutant vos omnes nos'.
Now, thank you to: LordStonefish, Aiden Eldritch, Lazar, minmin, Shaggydredlocks, Dr Leonard, Gog33, DrChandra, Petrograd, psul, Reddit users Old_Gen_Richtofen and brobafett42, as well as all the other users who I am unfortunately unable to recall.
I also want to acknowledge Dr Carrion and Zmax15 - we all (originally) came up with very similar ideas (due to similar/same inspiration/sources), and I hope that no ill will comes between us because of this.
And, of course, good luck everyone on the 3000 contest. pistachio nuts