Two-year-old.
"Sir, I'm afraid it's no use." The man's voice held a note of frustration mixed with worry. "I've tried."
"Try it again."
"Mr. Trask, I've tried every type of needle known to mankind. The child's skin is impervious."

(Translation: There, there. It’s not so bad.)
Cameron chuckled from his place on the other side of the room.
So, did he become un-degraced by finding a supposed alien inside a supposed alien space ship?
Now they became only the whimpering cries of a frightened child in desperate need of comforting.
Also, likely a diaper change
The sound of gunfire blotted all other noise out. S flinched at every shot, the sound reverberating in his ears.
He looked down at the spent rounds that lay pooled around his feet. They were high enough to bury his toes and kiss his ankles.

What are they trying to prove? Find the spot where the leaf has fallen onto his shoulder while little Siegfried was bathing in the dragon’s blood?
And somehow, S knew, child though he was, that it could kill him.
Hey! When did they teach him about death?