6 . ▁ ▁Chap ters ▁and ▁selected ▁sections ▁of ▁this ▁edition ▁are : ▁▁ ▁Chapter ▁ 1 ▁– ▁General ▁Pro vis ions ▁and ▁Re quire ments ▁ ▁Chapter ▁ 2 ▁– ▁Security ▁Clear ances ▁ ▁Section ▁ 1 ▁– ▁Fac ility ▁Clear ances ▁ ▁Section ▁ 2 ▁– ▁Person nel ▁Security ▁Clear ances ▁ ▁Section ▁ 3 ▁– ▁Foreign ▁O wn ership , ▁Control , ▁or ▁In flu ence ▁( FO CI ) ▁ ▁Chapter ▁ 3 ▁– ▁Security ▁Training ▁and ▁Br ief ings ▁ ▁Chapter ▁ 4 ▁– ▁Classification ▁and ▁Mark ing ▁ ▁Chapter ▁ 5 ▁– ▁Saf egu arding ▁Class ified ▁Information ▁ ▁Chapter ▁ 6 ▁– ▁Vis its ▁and ▁Me et ings ▁ ▁Chapter ▁ 7 ▁– ▁Sub cont ract ing ▁ ▁Chapter ▁ 8 ▁– ▁Information ▁System ▁Security ▁ ▁Chapter ▁ 9 ▁– ▁Special ▁Re quire ments ▁ ▁Section ▁ 1 ▁– ▁R D ▁and ▁FR D ▁ ▁Section ▁ 2 ▁– ▁Do D ▁Crit ical ▁N uc lear ▁We ap on ▁Design ▁Information ▁( CN W DI ) ▁ ▁Section ▁ 3 ▁– ▁Int elligence ▁Information ▁ ▁Section ▁ 4 ▁– ▁Communic ation ▁Security ▁( COM SE C ) ▁ ▁Chapter ▁ 1 0 ▁– ▁International ▁Security ▁Re quire ments ▁ ▁Chapter ▁ 1 1 ▁– ▁Mis cell aneous ▁Information ▁ ▁Section ▁ 1 ▁– ▁TE MP E ST ▁ ▁Section ▁ 2 ▁– ▁Def ense ▁Techn ical ▁Information ▁Center ▁( DT IC ) ▁ ▁Section ▁ 3 ▁– ▁Independent ▁Research ▁and ▁Development ▁( IR & D )