| URL | Priority | Change frequency | Last modified (GMT) |
|---|---|---|---|
| https://frontlinevideos.com/us-testing-its-most-expensive-helicopter-ever-made/ | 20% | Monthly | 2023-01-07 18:09 |
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| https://frontlinevideos.com/why-the-army-chose-bells-tiltrotor-over-sikorskys-design/ | 20% | Monthly | 2023-01-04 11:39 |