I reported previously (Apr 2015) about Israel’s Percepto – an autonomous drone camera system with multiple applications. Percepto’s new “Sparrow I” provides 24-hour aerial monitoring of complex environments where security is imperative, such as oil and gas refineries, power plants, ports and sea terminals.

https://www.timesofisrael.com/israeli-startup-sires-autonomous-drone-for-harsh-industrial-settings/