>>/872611/
The Historical inaccuracy is UFO's have a deadly gravi-photon field around the hull. 

UFO's can not shoot guns or depLoy any ordance. They are reconnaissance vehicles. They cannot under any circumstances be adapated to conventional warfare. Hence they were supressed. 

GOT IT ? 
MAYBE I MIGHT KNOW A BIT MORE  ABOUT THE REAL STATE OF THINGS ?
THANK YOU. 

https://youtube.com/watch?v=thZX9zHwodk