This handbook is to be used during the engineering design of Department of Defense (DoD) facilities to assure appropriate physical security is included. The guidelines are based upon the best currently available research and test data, and will be revised or expanded as additional research results become available. The contents include procedures for planning and designing an integrated physical security system for new facilities as well as the retrofit of existing facilities. The focus is on construction choices for protection against forced entry, and ballistic and standoff weapons. Design procedures are also summarized for vehicle bomb blast protection, referencing appropriate sources for details.