FAA Regulation

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

No, 14 CFR Part 107 only applies to sUAS weighing less than 0.55 lbs. Yes, there is no lower weight limit for operating under 14 CFR Part 107.   No, roof ...

Over suburban areas. Over a parade or other social events. Over a sparsely populated area.  

filed a IFR flight plan. received prior authorization from the controlling agency.  received prior permission from the commanding officer of the nearest military base.

Not compliant with Part 107. Part 107 does not apply to this scenario. Compliant with Part 107. 

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. 

They can maintain line of sight and without loss of control.  They briefed each other before the flight. They are in radio contact the entire time.

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 ...