Potacas work for G.O.D. (Genetic Ordnance Department) within the UFOIGP. One of the main objectives of this department is to collect DNA and RNA samples, said to be for the study of Earth diseases. When people are taken, it is said they are not hurt and 9/10 do not wake up during the examination procedure, most are put to sleep via sound vibration using Beta waves which effect certain areas of the brain and cause a sleep type effect upon the body and mind of the individual. The most common procedure is a blood sample and a hair sample for DNA and RNA anaylsis to detect the changes within the human species on earth, this has been going on for thousands of years and is standard procedure when recording the evolution of a new species of human being on 4 levels. Physically, mentally, emotionally and spiritually, the Potacas are friendly and non-violent, the only time they use force is if they are attacked and then they use telepathy to disarm the individual which causes no after effects to the individual.