The "No American Left Behind Act" mandates that the Secretary of Defense submit a comprehensive report to congressional defense committees within 180 days of enactment. This report will detail the Department of Defense's support for the recovery, repatriation, and accountability of United States nationals abroad. The scope includes individuals who are deceased, unlawfully detained, missing, or of unresolved status, particularly focusing on areas of current or recent U.S. military operations in the Middle East and Africa, such as Syria, Iraq, and Afghanistan. The report must include several key assessments. It will evaluate the interaction between the Assistant Secretary of Defense for Special Operations and Low-Intensity Conflict and the Hostage Recovery Fusion Cell for contingency planning, and how geographic combatant commands incorporate rescue missions into operational plans. Furthermore, it will identify the criteria for recommending military asset use in hostile areas and assess how the Department maintains intelligence on detained nationals in areas without a military presence. Additionally, the report is required to identify any statutory authority, policy constraints, intelligence limitations, or resource gaps affecting recovery efforts, along with recommendations to address these issues. It will also assess best practices from partner nations regarding citizen recovery and repatriation, even years after hostilities. A crucial element is the assessment of the feasibility and operational implications of establishing a formal, enduring "No American Left Behind" doctrine within the Department of Defense. Finally, the report must provide a detailed assessment of case-specific Department of Defense support equities related to deceased U.S. nationals whose remains have not been recovered, as well as those wrongfully detained, missing, or of unresolved status in specified regions. Congress expresses its sense that the U.S. should maintain a sustained commitment to these recovery efforts and evaluate establishing such a doctrine. The report will be submitted in unclassified form, with the option for a classified annex for sensitive case details.