s ; ▁assistance ▁within ▁their ▁compet ence ▁to ▁carry ▁out ▁custom s ▁and ▁border ▁crossing ▁points ▁where ▁there ▁is ▁no ▁permanent ▁custom s ▁control ; ▁ar range ▁for ▁the ▁detection ▁and ▁elim ination ▁of ▁poll ution ▁in ▁co operation ▁with ▁other ▁state ▁ag encies ; ▁to ▁particip ate ▁in ▁search ▁and ▁rescue ▁operations , ▁ens uring ▁the ▁economic ▁legal ▁reg imes , ▁navigation , ▁fish eries ▁and ▁animal ▁hunting ▁law ▁execution ▁and ▁control ▁of ▁air space ▁and ▁to ▁assist ▁the ▁police . ▁ ▁The ▁activities ▁and ▁planning ▁of ▁the ▁Border ▁Guard ▁Board ▁is ▁based ▁on ▁the ▁pers pect ives ▁of ▁the ▁d angers ▁to ▁national ▁security ▁and ▁internal ▁stability , ▁commit ment ▁neighbor ing ▁countries , ▁the ▁Nord ic ▁countries ▁and ▁the ▁European ▁Union , ▁whose ▁execution ▁guarante es ▁the ▁stability ▁of ▁the ▁Republic ▁of ▁Est onia ▁on ▁the ▁outer , ▁border ▁opportun ities ▁to ▁use ▁human ▁and ▁material ▁resources . ▁ ▁Currently ▁there ▁are ▁ 2 8 ▁sea ▁border ▁check points , ▁six ▁air port ▁check points , ▁three ▁motor way ▁border ▁check points , ▁two ▁railway ▁check points ▁and ▁two ▁special ▁border ▁check points ▁meant ▁only ▁to ▁be ▁used ▁between ▁Est onia ▁and ▁the ▁Russian ▁Federation . ▁In ▁addition ▁to ▁these ▁border ▁install ations ▁there ▁are ▁six ▁preserved ▁border ▁stations ▁ready ▁to ▁be ▁oper ational ▁once ▁Est onia ▁has ▁left ▁or ▁no ▁longer ▁maintain s ▁the ▁Sch engen ▁Ag re ement ▁between ▁the ▁European ▁Union ▁and ▁Est onia . ▁These ▁facilities ▁are ▁located ▁only ▁in ▁the ▁south ▁on ▁the ▁Est onian