 How did Jery feel when he first encountered the security men?
MASTER SPY OF THE RED PLANET Jery Delvin had a most unusual talent. So when the Chief of World Security told him that he had been selected as the answer to the Solar System's greatest mystery, Jery assumed that it was because of his mental agility. But when he got to Mars to find out why fifteen boys had vanished from a spaceship in mid-space, he found out that even his quick mind needed time to pierce the maze of out-of-this-world double-dealing. For Jery had become a walking bomb, and when he set himself off, it would be the end of the whole puzzle of THE SECRET MARTIANS—with Jery as the first to go! He says, "I'd like to say I do this for fulfillment, or for cash, or because it's my destiny; however, the real reason (same as that expressed by Jean Kerr) is that this kind of stay-at-home self-employment lets me sleep late in the morning." I didn't quite believe it at first, when I looked up and saw them, six-feet-plus of steel nerves and gimlet eyes, staring down at me, amidst my litter of sketches, crumpled copy sheets and deadline memos. "Jery Delvin?" said the one on my left, a note of no-funny-business in his brusque baritone. Security men were not hired for their loquaciousness.
 confused and nervous
 confused and nervous  frustrated and annoyed  guilty and sad  nervous yet excited