U.S. Air Force Col. Derek Rankin, chief of staff for the Defense POW/MIA Accounting Agency the Defense POW/MIA Accounting Agency, has his family reference sample taken during a family member update in Detroit, Mi., May 02, 2026. Reference samples are critical to the identification process, and relatives of MIA/POWs are encouraged to contact their service casualty office. (U.S. Marine Corps photo taken by Cpl. Stephen Holland)