Imagine moving into new quarters, on a new installation, with no friends. Now, add to the stress the fact that you’re a first-time mom with a 16-month-old baby who has been running a fever. Last Friday at 1 p.m., this was the setting for a rescue that neither mom nor the rescuer ever will forget. The baby started to convulse. The baby’s family had been on Fort Knox for two days. Dad was still in-processing.