FAA Regulation

Visual observer. Person manipulating the controls. Remote Pilot in Command (Remote PIC). 

Quadcopter capturing aerial imagery for crop monitoring. UAS used for motion picture filming. Model aircraft for hobby use. 

Only when the operator will be paid for commercial services. All civilian small UAs weighing greater than .55 pounds must be registered regardless of its intended use.  When the small UA ...

is required to receive ATC authorization.  must use a visual observer. is required to file a flight plan.

The owner of the aircraft. The manufacturer of the aircraft. The operator of the aircraft.

Person manipulating the controls. Remote Pilot in Command (Remote PIC).   Visual observer.

Yes, my category 2 sUAS is approved for sustained flights over people. Yes, as long as you are transiting.  No, you must wait for the traffic to stop before you can ...

the Remote PIC.  the controlling agency. Air Traffic Control.