Now all he had to do was find a way to tell Gibbs. His chance came when Kate and Gibbs arrived to relieve him and Tim. Abby called with the news that the blood from Voss’ supposed car wreck was O-positive. Lieutenant Commander Voss’s blood was AB-negative. As Kate moved to take over Tim’s position Gibbs announced a change of plans. He and Kate would check out GeoTech Labs, the company that certified Voss’ body, while Tony and Tim stayed longer.