This image provided by the U.S. Navy shows sailors assigned to Explosive Ordnance Disposal Group 2 recovering a high-altitude surveillance balloon off the coast of Myrtle Beach, S.C., Feb. 5, 2023. (U.S. Navy via AP)

WASHINGTON (AP) — The Navy has shifted to an all-underwater search for pieces of the massive Chinese spy balloon a U.S. fighter jet shot down off the coast of South Carolina on Saturday. It is using sophisticated reconnaisance drones dubbed the Kingfish and the Swordfish to scour the ocean. U.S. officials say Navy and Coast Guard personnel have collected all they could of the balloon remnants that were floating on the surface. On Tuesday, they were using the drones to locate and map the debris field, and Navy divers were beginning to pull pieces from the ocean floor.