▁main ▁forces , ▁such ▁as ▁border ▁gu ards , ▁special ▁police ▁units , ▁or ▁aspects ▁of ▁the ▁state ' s ▁intelligence ▁ag encies . ▁In ▁some ▁states , ▁internal ▁security ▁may ▁be ▁the ▁primary ▁responsibility ▁of ▁a ▁secret ▁police ▁force . ▁ ▁The ▁level ▁of ▁author ized ▁force ▁used ▁by ▁ag encies ▁and ▁forces ▁responsible ▁for ▁maintain ing ▁internal ▁security ▁might ▁range ▁from ▁un ar med ▁police ▁to ▁fully ▁armed ▁par amil it ary ▁organizations , ▁or ▁employ ▁some ▁level ▁of ▁less - le th al ▁weapon ry ▁in ▁between . ▁For ▁violent ▁situations , ▁internal ▁security ▁forces ▁may ▁contain ▁some ▁element ▁of ▁military ▁type ▁equipment ▁such ▁as ▁non - mil it ary ▁arm ored ▁vehicles . ▁ ▁Justice ▁aspects ▁Depending ▁on ▁the ▁organization ▁of ▁the ▁state , ▁internal ▁security ▁forces ▁may ▁have ▁juris diction ▁on ▁national ▁or ▁federal ▁levels . ▁As ▁the ▁concept ▁of ▁internal ▁security ▁refers ▁to ▁the ▁entity ▁of ▁the ▁state ▁and ▁its ▁citizens , ▁persons ▁who ▁are ▁thre ats ▁to ▁internal ▁security ▁may ▁be ▁designated ▁as ▁an ▁enemy ▁of ▁the ▁state ▁or ▁enemy ▁of ▁the ▁people . ▁ ▁Pers ons ▁det ained ▁by ▁internal ▁security ▁forces ▁may ▁either ▁be ▁de alt ▁with ▁by ▁the ▁normal ▁criminal ▁justice ▁system , ▁or ▁for ▁more ▁serious ▁cr imes ▁against ▁internal ▁security ▁such ▁as ▁tre ason , ▁they ▁may ▁face ▁special ▁measures ▁such ▁as ▁secret ▁tri als . ▁In ▁times ▁of ▁extreme ▁un rest , ▁internal ▁security ▁actions ▁may ▁include ▁measures ▁such ▁as ▁intern ment ▁( det ention ▁without ▁trial ). ▁ ▁Rel