The object was in the southern sky about 2 fists above the horizon and 250 degrees off the Woodstown VOR ( OOD ) . The altitude was around 8000 -10000 feet. The object was in a hoover mode for around 1 hr then slowly moved further south and climbed to a higher UKN altitude. On sunday 3-25-12 around 10:30 pm the object appeared in the same spot and had the same flight pattern. While oberving this object a large aircraft was just below the object mentioned above had the " usual " aircraft NAV lights on it as it moved across the night sky. The object did not change its hoover mode during the other aricraft passing. The object would only flash the colors Light Blue, Light Green, and Red in its shape. On 3-25-12 the Millville Flight Services was called around 10:45 to report this matter. There was no further calls or reports from them as of the following day. On 3-26-12 I will try of obtain photos of this object to provide further information.