PPE cannot fulfill its intended purpose unless its protective features are maintained under proper conditions. PPE clothing should only be kept in the trunk of a patrol car during a shift and in a protective bag. When not on patrol, the PPE clothing should be removed from the trunk and stored in a dry storeroom or locker. A gas mask or air purifying respirator should be stored in a sealed plastic bag, preferably supplied by the manufacturer, and the equipment should not be subjected to wide temperature swings. As with clothing, it should not be stored in a patrol car except during a shift. Equipment should be selected based on function, the provision of containers appropriate for storage, and clear manufacturer instructions on the proper use and storage of the equipment. This article describes breathing devices provided by various manufacturers for use in areas contaminated by nuclear, biological, and chemical warfare agents. The article concludes with suggestions for resources to consult as an agency assesses its current and future needs for PPE.