Sphere witnessed in VA

My father worked at the brewery in Williamsburg, VA.He told me that one night one of the delivery drivers had seen something strange.At about 4am while he and his partner were loading the truck they saw a spherical metalic object hovering in the loading are behind the brewery.They called to another man who was in an office and he also witnessed the events.The object just hovered over several of the trailers.It then produced a sort of arm device that came out of a hole which appeared in the craft.They couldnt see what the arm was doing but it looked like it was touching the ground.The object hovered for about 20 minutes with all 3 men watching the entire time.The object then turned and slowly moved out of view.They didnt see it again.My father told me the man who told him about this was a huge skeptic, and was actually afraid to tell anyone for fear of ridicule.Thought you might find this interesting.
Date is approximate.  PD