The official description
This is an FBI 302 interview conducted with a senior US intelligence official regarding his first-hand account of a UAP encounter at a US military facility. USPER relayed to FBI agents that he and other federal and state personnel conducted searches to where orbs had been previously seen. After searching the area with a helicopter, they found a “super-hot” orb hovering over the ground. The orb is reported to have travelled for 20 miles at a speed too fast for the helicopter in pursuit. An additional “swarm” of lights were seen moving in all directions. A total of four or five additional orbs were seen shortly thereafter for a short time, flaring up and then down.
Quoted from the U.S. Department of War, PURSUE UAP releases. Read every file for this incident in Official files or at war.gov/UFO.