Presumed Lost:

I read the same Heinlien book, and I recall its name as "Gateway to the Stars".

I am currently 57 years old, and I wonder if they changed the name before I read it or before you read it.

I like the rationalization that the main characters older sister gave him reqarding weaponery for his final exam.

It is a great book, but I did not like anything Heinlien wrote after the adult sex adventures started interfereing with the science fiction in his books.

Bountyhunter