TM 10-8415-209-10 TM 8415-10/2 a. General.        These    procedures    should    be    followed    when    removing    the    overgarment    suit    in    an uncontaminated  environment.    To  remove  the  overgarment  suit  in  a  contaminated  environment,  refer  to  FM  3- 5/FMFM 11-10. b. Perform the following steps. (1) Remove helmet and chemical protective helmet cover, if worn. (2) Remove chemical protective mask and hood (refer to Soldier's Manual STP 21-1-SMCT or Appendix A for specific chemical protective mask TM). 2-24