The Characters 

Joe Grayer is an avid and skilled    motocross bike driver 

Hawk, his twin, has a summer job with the telephone company as a linesman. 

 Frank Grayer, their father, works at the Pentagon with the Department of Defense 

David Bohr, nuclear physicist , surrogate father to Joe and Hawk, has a secret lab located in Los Alamos. His team are examining the wreck of a extraterrestrial space craft.

 

 

Cringen, Connelly, Grayer, Bohr and others were part of the science team that probed the wreck of a spaceship recovered in the 1940's