Here we have a lighter-than-air surveillance drone, used for military, police, and civilian markets for a number of tasks. When not in use, the envelope is retracted into the fuselage for better storage, along with the detachable tail fin. Due to the minimal amount of power it needs to stay in flight, thanks to the gas system, it maintains high-altitude surveillance for weeks on end. Farmers often use them to look for lost livestock or locate where the pests are coming from.

And here's a jest walking beside it for a good size comparison.

Hope you enjoy!