Primary Image Source – Shutterstock/WikipediaCommons/DVIDSHUB
Secondary Image Source - EnvatoElements
Primary Background Footage Source - EnvatoElements
Secondary Background Footage Source - PreLinger archives/WikipediaCommons
Any other footage used listed under Creative Commons CC0, CC1, CC2, CC3 or CC4
https://creativecommons.org/publicdomain/zero/1.0/
https://creativecommons.org/licenses/by/1.0/
https://creativecommons.org/licenses/by/2.0/
https://creativecommons.org/licenses/by-sa/3.0/deed.en
https://creativecommons.org/licenses/by/4.0/

Entries 5, 3 and 2 licensed from JukinMedia
Entry 4 licensed from Sigit Cahyanto
Entry 1 image credit Jason Bundoff
Thumbnail image in the Public Domain. Derivative work by Underworld

Other footage sources we may use;
- National Park Service Public Domain B-Roll
- NOAA
- NASA
- USGS
- DoD
- Creative Commons videos on YouTube if we can verify that the source is original

The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.
The appearance of ANY U.S. Government visual information does not imply or constitute endorsement by any government agency or affiliated agency.