Lockheed C-5 Galaxy Low-poly 3D model is available on CGTrader for $59. Original author: zefy93. Specs: 7248 polys, 8956 verts.
MAX (Autodesk 3ds Max, filesize: 496 KB), OBJ (OBJ, filesize: 1.03 MB), FBX (Autodesk FBX, filesize: 943 KB), TEXTURES (Textures, filesize: 26.7 MB)