UFOs

Long considered by many to be sentient life visiting Earth from other star systems, the UFO phenomenon is primarily a con by various military groups. A deception fueled by the desire to obfuscate technology which has been hidden from the popular consciousness for many millennia. Most demonstrably active in this field are the United States 7th Army. However European nations have been quite apparently engaging with this conspiracy since the late stages of WW2.   

There are accounts which sit outside of this elaborate smoke screen. Most notable are witness testimonies provided by commercial pilots who have recorded details of crafts of such massive scale that they are unlikely to have been engineered in a terrestrial environment.  

As usual the truth is like an exceedingly elaborate poem; filled with strata of deception and nobody really likes it.