| Typicality: | 0.446 |
| Saliency: | 0.308 |
| between dec. | 5 | temporal |
| in u.s. airspace | 3 | location |
| in its december 2015 report | 2 | temporal |
| incident → involve → drone | 28 |
| negative | neutral | positive |
| 0.382 | 0.584 | 0.034 |
| Raw frequency | 28 |
| Normalized frequency | 0.308 |
| Modifier score | 0.700 |
| Perplexity | 83.000 |