YOKOSUKA, Japan - Chemical, Biological and Radiological (CBR) Technician Jose Perez instructs Electrician's Mate Fireman Sydney Blom how to properly don an advanced chemical protective garment (ACPG) on the mess decks aboard U.S. 7th Fleet command flagship USS Blue Ridge (LCC 19). The ACPG prevents Sailors from contracting chemical, biological and radiological contaminants. (U.S. Navy photo by Mass Communication Specialist 3rd Class Timmy Wakefield)