A French nuclear submarine joined the hunt Wednesday for the "black box" flight data recorder and other wreckage of Air France Flight 447 as Brazilian air force and navy crews continued to pull bodies from the Atlantic. France is leading the investigation into what caused last week’s accident when the Paris-bound flight from Rio de Janeiro plunged into the sea off the Brazilian coast with 228 passengers and crew on board. The French nuclear submarine Emeraude began patrolling the area Wednesday morning, the French defense ministry said.
