 Which word least describes Eckert?
[Transcriber's Note: This etext was produced from Galaxy Science Fiction August 1951. Weltschmerz, perhaps. Eckert, one of the good gray men in the Service. Eckert was just a dull, formless blur opposite him. Eckert had fiddled with the controls and changed it to sunshine, then to a weird mixture of hail amid the brassy, golden sunlight. In high school and later in college, he was the well-balanced type, athletic, popular, hard-working. Eckert and he had been chosen to go to Tunpesh and investigate. The thin red line was practically microscopic now and Templin could feel his lashes lying gently on his cheeks. Warm breezes rustled through Eckert's graying hair and tugged gently at his tunic.
 nervous
 experienced  observant  nervous  open-minded