Drone Aircraft Markings Query

[Cobra]

Hey Guys, as You know, I'm Planning to Turn a Model of the SR-71 Blackbird into a "Super Drone", Can Anyone tell Me if it's OK to put 'WAF' markings on the Wings or Where else is there? I Printed one WAF Markings set with my Dymo Letratag Label Maker, and want to know if i should do that or on Both Wings? What Say You? Thanks for Looking. Dan