![Portland police add drones to investigatory tools; audit urges surveillance safeguards - oregonlive.com Portland police add drones to investigatory tools; audit urges surveillance safeguards - oregonlive.com](https://www.oregonlive.com/resizer/OynSIZJ8X6llUZQQhZ0vYm2voeY=/1280x0/smart/cloudfront-us-east-1.images.arcpublishing.com/advancelocal/DJJPNPWVYBF3HJ2GP47X7ISTGM.jpg)
Portland police add drones to investigatory tools; audit urges surveillance safeguards - oregonlive.com
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