materials extracted from the earth's crust. and rather than down-cycle them, meaning turning them, say, back into an aluminum can, this is repurposing and reusing. and i suggest taking advantage of the billions of dollars of research and engineering that went into creating this amazing structure that uses materials in the most efficient manner possible to achieve the highest strength. why not repurpose and reuse that? >> they're built a specific way. by the way, so that as pilots fly over that, they don't see two dismantled wings of a 747 and become concerned, you actually had to get the faa involved in this? >> right, we are in the flight path for l.a.x. and you can clearly see the wings and the two horizontal stabilizers from the tail section that form the uppermost tier so that they are not recognized as a downed aircraft, they are registered and identified. so it's not a crash site.