Radiological protection   —   Requires the mask only (with new, unopened canisters). 2.   Collective   activities   —   Review   survival standards   and   basic   operating   standards   for CBR  environments  as  described  by  the  ship’s CBR defense bill. Verify  that  personnel  are  assigned  to  CBR defense teams and review required procedures. Inventory  stowed  detection  and  monitoring equipment,   as   applicable,   for   maximum authorized  levels,  current  shelf  life,  presence  of all   components,   and   function   within   normal limits. Inventory   stowed   supplies   for   personnel decontamination stations, shipboard decontamination   teams,   and   biological sampling. Inventory  stowed  water  canteens  to  ensure adequacy of allowance serviceability. Replace   expired,   missing,   or   consumed equipment,   components,   and   supplies   to maximum authorization levels. Set   readiness   Condition   III   (wartime steaming). Set material condition YOKE. 3.   Shipboard systems: Operationally   test   collective   protection systems, where available. Test   installed   detection   and   monitoring systems. MOPP Level-2 (Possible Threat) Protection During  MOPP  level-2  the  following  actions  must be taken: 1.   Individual  protection  —  For  all  CBR  threats, maintain   protective   mask   in   carrier   and   on person. 2.   Collective activities: Designate  primary  and  secondary  personnel decontamination   stations   with   respective weather-deck and internal access/exit routes. Pre-position   decontamination   supplies   in decon stations and at respective repair lockers as required by the ship’s CBR defense bill. Pre-position   stowed   detection,   monitoring equipment, and supplies at locations designated by the ship’s CBR defense bill. Pre-position  empty  canteens  at  staging  areas as designated by the ship’s CBR defense bill. Set material condition ZEBRA (modified). 3.   Shipboard   systems   —   Operationally   test countermeasures   washdown   system.   Test shipboard alarms. MOPP Level-3 (Probable Threat) Protection During  MOPP  level-3  the  following  actions  must be taken: 1.   Individual protection: For all CBR threats, install new filter canisters on  protective  masks;  maintain  in  carrier  and  on person. Provide  wet-weather  gear  for  donning  over other  protective  clothing  and  equipment  for  all weather-deck activities. Chemical: -   Don   chemical   protective   overgarments (CPOs)  (jumper  and  trousers)  with  hood down. -   Don chemical protective overboots. -   Stow   personnel   decontamination   kit   in mask carrier. -   Stow  chemical  protective  glove  set  and medical supply items in the jumper cargo pocket. -   Initiate   pyridostigmine   pretreatment regimen. Biological: -   Don   chemical   protective   overgarments (jumper and trousers) with hood down. -   Don chemical protective overboots. -   Stow   personnel   decontamination   kit   in mask carrier. 6-13