Is the U.S. Space and Rocket Center a government facility? They have a copyright notice on their web page, which isn’t normally on federal government pages.
The U.S. Space & Rocket Center (USSRC), an agency of the State of Alabama, established the U.S. Space & Rocket Center Foundation in September of 2000. The Foundation was designated as a 501(c)(3) organization by the Internal Revenue Service on March 22, 2002.