PHOs possess limited authority to consult outside experts during Article 32 reviews, though practical and regulatory constraints typically prevent extensive independent investigation beyond evidence presented by parties. While PHOs may seek clarification on legal issues from supervisory judge advocates or technical matters from military subject matter experts, formal expert consultation requires party notice and opportunity to respond. Independent evidence gathering exceeds PHO authority, which focuses on evaluating presented evidence rather than conducting investigations.
Permissible consultations might include clarifying military regulations or customs with appropriate authorities, seeking legal guidance on novel issues from senior judge advocates, or understanding technical evidence through informal education. However, any substantive expert input affecting recommendations should be disclosed to parties enabling response. Ex parte expert communications risk creating appealable issues regarding fundamental fairness and confrontation rights.
Practical limitations include time constraints for completing reports discourage extensive consultation, lack of funding for independent expert retention, and potential bias concerns from undisclosed expert influence. PHOs typically rely on expert testimony presented during hearings rather than seeking independent validation. If technical issues require clarification, PHOs more appropriately direct parties to provide additional expert testimony rather than conducting independent research.
Strategic implications involve monitoring any PHO mentions of outside consultation and preserving objections to undisclosed expert influence. Defense teams might propose specific expert testimony addressing PHO concerns rather than accepting independent consultation. The limited PHO role evaluating presented evidence rather than investigating cases continues distinguishing preliminary hearings from judicial proceedings where judges might appoint independent experts.