Between 7:30 and 8:00 am, June 9th I observed six round shinny objects tree top level to the north and east of Lincoln Airport. These objects moved higher in altitude and in the westerly direction. They formed three groups of two. They appeared to hover for a short time. While hovering the middle group of two split into three objects. The groups then moved in a southeasterly direction. A helicopter was also observed for a short time. the closest military base confirmed no radar images or ballon launches. On June 10th around 11:00am a group of four Apache attack helicopters were seen in the area. I have video but unable to attach to report.