“The first SR-71 we came out with, Lockheed came to us and said, ‘How did you get this?’ And, so, we actually had to delay the launch to get Lockheed’s approval, so these are all, you know, licensed by Lockheed Martin.”
Source: Dave Hall, CEO of MotoArt PlaneTags, explaining some of the history about the Plane Tags now offered that were built with real SR-71 componentry.