Leon led the DSO squad sent to deal with the found clandestine bioterrorist laboratory. While his people were clearing the chambers containing BOWs - mutants and other creatures - Leon carefully walked into the laboratory section. He wanted to copy and delete all information about the experiments being carried out here, but then his gaze fell on the vertical tank. The silhouette in the water resembled a person to whom was connected different tubes and wires. Leon came closer to see what's inside.