Ben Adams said activity at UAV Engines was becoming a "day trip to cause aggravation" for some activists.
Officers held 26-year-old from Burton-upon-Trent in connection with incident in April.
Individual from the Lichfield area not named in order to protect victim's anonymity.
The 26-year-old – who has not been officially named – has been held on suspicion of making an indecent photo or pseudo-photograph of a child.
Silence Elbit Drones group say its members were behind 'lock-on' activity.
Incident happened at car park on Frog Lane.
Officers release image as part of investigation into incident in August.
Officers launch appeal after reports from local residents.
Incident on Burntwood Way involved two cars.
Lewis Davison, 26, also posted captions calling for them to be raped and assaulted.
Trio held after police were called to Lynn Lane.
Alex Trusler, from Burntwood, was a response officer for Staffordshire Police in Cannock.
