witnessed lights in the NE sky from Hilo, HI., that moved rapidly and erratically for about 30 minutes.Looking at the early morning sky, North east from Hilo in the Waimea direction, I noticed a flickering light. As I looked on, I noticed that it was moving erratically, up then down rapidly, then side to side and also making circular motions again rapidly. I am familiar with standard aircraft movement of all types, these movements were too rapid and erratic to fit normal aircraft. Also, the lights began to change, color and direction giving the impression that the aircraft was approaching but in fact never left the general location in the sky. I have never seen anything like this so my interpretation could be vague to some, all I know is what I saw and hope that my description is familiar to anyone else who might have seen this.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))