make sure the UAS is within 400 feet of the control station. maintain line of sight throughout the entire process.   have a visual observer.

Turn down the intensity of the light.  Look down at your controller screen to fly the drone and find the obstacle. Turn off the strobe light.

Civil and public aircraft operations. Public and military operations. Civil operations. 

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

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

No more than three as long as the Remote PIC maintains visual line of sight. As many as he/she can handle. No more than one. 

Use a “buddy box” system with two controllers. Use a radio system to instruct the non-rated pilot. The Remote PIC cannot supervise a non-rated pilot.