File:Us-helicopter-routes.png
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![File:Us-helicopter-routes.png](https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Us-helicopter-routes.png/800px-Us-helicopter-routes.png?20071219073552)
Size of this preview: 800 × 514 pixels. Other resolutions: 320 × 206 pixels | 640 × 411 pixels | 1,024 × 658 pixels | 1,450 × 932 pixels.
Original file (1,450 × 932 pixels, file size: 2.54 MB, MIME type: image/png)