Dr. John Byrd, Defense POW/MIA Accounting Agency (DPAA) laboratory director, gives Ambassador Marc Knapper U.S. Ambassador to Vietnam and Ambassador Peter Haymond U.S. Ambassador to Laos, a laboratory tour during a DPAA facility visit on Joint Base Pearl Harbor-Hickam, Hawaii, Jan. 19th, 2023. The visit included a laboratory tour, a briefing on the agency's Battle of Tarawa project and a tour of the facility's family viewing room. DPAA's mission is to achieve the fullest possible accounting for missing and unaccounted-for U.S. personnel to their families and the nation. (U.S. Air Force photo by Senior Airman Cole Yardley)