TM 10-8415-209-10 TM 8415-10/2 c. When directed by unit MOPP level, don GVOs, BVOs   or   CPFCs   (1)   and   blouse   duty   uniform   ankle closures  (2)  over  GVOs,  BVOs  or  CPFCs  (1).    (When insulated  rubber,  cold  weather  boots  are  worn,  chemical protective overboots are not required.) d. When    directed    by    unit    MOPP    level,    don chemical   protective   mask   and   hood   (refer   to   Soldier's Manual   STP   211-SMCT   or   Appendix   A   for   specific chemical protective mask TM). 2-12