The memorandum from the Air Force Life Cycle Management Center instructs vendors and contractors that unmarked engineering drawings should be treated as having a specific distribution statement, limiting access to U.S. Department of Defense personnel and contractors only. It warns that unauthorized dissemination of the technical data may lead to severe legal penalties and impact contractor qualifications, while also stating the government assumes no liability for issues arising from the use of this data. Additional instructions for managing export-controlled technical data are attached, and inquiries should be directed to a specified contact.