Whats a aerial photograph?

A aerial photo is a photo taken from the sky :D

Explanation:

Hope this helps~

Aerial photography is the taking of photographs from an aircraft or other flying object. Platforms for aerial photography include fixed-wing aircraft, helicopters, unmanned aerial vehicles, balloons, blimps and dirigibles, rockets, pigeons, kites, parachutes, stand-alone telescoping and vehicle-mounted poles.

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have a good day :)

Explanation:

i believe their role is to instruct certain sections on when they are to join and when they are to stop