So, given that you paid-up for the gas when requested, you didn't intend to permanently deprive the owner of it which suggests that technically it wasn't larceny and could have been sloughed-off as a misunderstanding. Given you were dealing with an NSA interview, sounds like they were playing a psychological setup game to determine how calmly you would respond under pressure in the context of an intimidating polygraph test. Seems like they weren't too thrilled with the responses they elicited. Would you really want to work for an organization that plays those sort of mind games?