The first four members of a youth soccer team trapped in a cave here for more than two weeks have emerged after long hours of complex, perilous transit through a treacherous, twisting and partially flooded network of tunnels stretching more than two miles into earth. Thai navy SEALs announced the extractions but did not reveal the condition of the boys. Plans called for the 12 players and their coach to be placed in ambulances and given medical assessments. They will be shuttled to helicopters that will take them to a hospital.