| Clue | Source | Date |
|---|---|---|
| Daunting "American Ninja Warrior" obstacle | TV | 24 Nov 2024 |
| Arcing "American Ninja Warrior" obstacle | LA Times Daily | 24 Feb 2018 |
| Arcing 'American Ninja Warrior' obstacle | The Washington Post | 24 Feb 2018 |
| Arcing "American Ninja Warrior" obstacle |