Navy Tactics, Techniques, And Procedures NTTP 3-07.2.3 Law Enforcement and Physical Security August 2011 This publication provides tactics, techniques, and procedures (TTP) governing the conduct of physical security (PS) and law enforcement (LE) at Navy installations, within expeditionary forces and onboard Navy ships. It provides a basis for understanding Navy policies and objectives related to PS and LE. More important, it provides regional commanders (REGCOMs), regional security officers (RSOs), installation and ship commanding officers (COs), security officers (SO), administrative staffs, and the Navy security force (NSF) with needed tools to help organize, plan, train for, and implement effective and efficient PS and LE programs using the limited resources at their disposal. Both PS and LE programs include measures taken by a command, ship, or installation to protect against all acts designed to, or that may, impair its effectiveness. In other words, both PS and LE personnel provide security and are key to the protection construct. Within this document, installation security officers and afloat security officers will be referred to as SOs.