Two-aircraft police grid patrol

A municipal public security bureau paired ZT-120V with ZT-25V: the larger aircraft sweeps mountain ranges on routine patrol, the smaller one closes in for evidence and traffic work. Task aircraft plus a relay aircraft hold 50–100 km of beyond-line-of-sight video over terrain where ground links fail, and a ZT-120V carrying a public-network base station restores communications at disaster sites. The project took first prize among 117 teams at a national police drone exercise.