TM 10-8415-209-10 TM 8415-10/2 Section III.  PRINCIPLES OF OPERATION 1-8.  GENERAL.  The various Individual Chemical Protective Clothing items provide different degrees of protection that can be used to defend against a mission-specific threat Each item also has wear and protection thresholds. Table 1-1.  Mission Oriented Protective Posture (MOPP) Levels CPOG or BDO or CPU W/Duty Uniform Helmet cover Overboots Mask/Hood Gloves MOPP 0 MOPP 1 MOPP 2 MOPP 3 MOPP 4 Carried Worn Worn Worn Worn Carried Worn Worn Worn Worn Carried Carried Worn Worn Worn Carried Carried Carried Worn Worn Carried Carried Carried Carried Worn 1-12