Xeena VRML importer, X3D-Edit 3.1, https://www.web3d.org/x3d/content/README.X3D-Edit.html
Tern UAV photo from http://www.aeroconcepts.com
Tern UAV schematic drawings from http://www.bai.aero
X3D-Edit 3.2, https://www.web3d.org/x3d/tools/X3D-Edit
Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html