Orbs
[Evidence of secret government craft and their silent cloaking/invisibilty ability.]
See: Invisibility [2007] Drones: Military Reverses Alien Technology. The Most Important Information Released This Decade
http://www.chemtrailcentral.com/orbs.shtml
http://www.gallerize.com/What_Is_The_Hologram_Theory.htm
Silver Orbs, bugs or something else?