shal L. Hatfield, seaman, USN, son of Mr. and Mrs. Joseph A. Hatfield of 145 Stewart st.. Chillicothe, Mo., is serving aboard the antisubmarine warfare support aircraft carrier USS Lake Champlain, observed by President John F. Kennedy during a two-day visit on April 13 and 14 to the Atlantic Fleet in Norfolk VaAfter a brief cruise in the fleet ballistic nubile submarine L'SS Thomas A. Kdison, the Presidential part boarded the tactical com-j mand ship USS Northampton to observe night air operations by the attack aircraft carrier USS Enterprise and USS Forrestal.The next morning, the President j received full honors in a review of the Second Fleet, and, followingan anti-submarine warfare exercise and an aerial firepower demonstra