Murder Beneath the Polar Ice

The Arctic Sea was deadly in every way—its icy water, crushing ice, avid beasts. Still something there was more lethal than these!
Wavelets of cigarette smoke drifted across the comfortably lounging enlisted men in the air-conditioned compartment of the Fleet Ballistic Missile submarine, as they sat watching Barney. Sweat streaming from his swollen-veined forehead, hurried and grotesque in his black rubber diving suit, exploding triumphant curses like underwater demolition charges, Barney finished tightening the control cables of what resembled a torpedo with two open cockpits. This time the little gal raises her hydroplanes!
At this contrast of men, the Murderer had to grin, but carefully in order not to sweat and ruin the insulating qualities of his three woolen layers of longjohns. The submariners seemed quiet-talking and cooperative, as well adjusted as sardines in a can. The diver, Barney, was foul-mouthed and fiercely individualistic, a wonderful guy—his diving buddy.
A legend in his own time, Barney was reputed to have arisen from the mine-strewn waters of the Korean coast at the time of the Wonsan-Inchon landings to give advice to General MacArthur.
As an Underwater Demolition Team diver, Barney dated clear back into the Murderer's childhood recollections of World War II, to dim names like Kwajalein and Guam, where former Seabees became combat divers to wire and blast Japanese underwater obstacles and leave welcoming signs for the Marines.
Barney was only quiet about two things, his age and his circumference. He still fancied himself a baseball catcher, and his stubby fingers showed the deleterious effects of grabbing at foul tips with a bare hand, but those same fingers could expertly repair a wristwatch and the automatic transmission of an admiral's car and hock one and borrow the other.
Barney had managed to put his homely younger sister through college and was now maneuvering to marry her off to a lieutenant commander on the staff of Admiral Rickover. And he could expertly joke the fears out of his diving buddy.