Dr. Roush (first name unknown) is an army doctor who performed a rape exam on Cori Green after she was violently gang-raped by four members of the private military contractor she was in Iraq for, Battle Tested Security. The evidence went missing, and Roush's deposition was cancelled, as part of a cover-up to make the investigation disappear.
She was tracked again and solemnly recounted what evidence she found. She was hesitant to testify in front of a grand jury, then outright perjured herself on the stand about the concise evidence she found and provided for the investigation. For her perjury, she was transferred by Battle Tested to Bahrain and got on a flight to avoid prosecution, but she did lead detectives to the rapists by mentioning all four were tested for chlamydia after Cori tested positive. (SVU: "Official Story")