The story finally claims that twelve American military personnel visited the planet between 1965 and 1978 and that all of the party have since died, from "after effects of high radiation levels from the two suns". Another version of the story claims that "Eight (8) Team Members returned on the seven (7) month trek home. Team Member #308 (Team Pilot #2) died of a pulmonary embolism en route to SERPO on the 9-month journey; 11 arrived safely. One (1) died on the planet – and both of their bodies were returned to Earth – while two (2) others decided to remain on the ALIEN homeworld of SERPO." (http://www.serpo.org/release36.php)