9 ▁to ▁try ▁to ▁as certain ▁whether ▁a ▁double ▁flash ▁in ▁the ▁South ▁Atlantic ▁that ▁was ▁detected ▁by ▁a ▁V ela ▁satellite ▁was ▁a ▁nuclear ▁weapons ▁test , ▁however , ▁the ▁result ▁was ▁incon clus ive . ▁ ▁Pakistan ▁& ▁India ▁The ▁Constant ▁Phoenix ▁aircraft ▁was ▁used ▁to ▁gather ▁information ▁on ▁the ▁nuclear ▁tests ▁conducted ▁by ▁Pakistan ▁and ▁India ▁in ▁ 1 9 9 8 . ▁ ▁Iran ▁The ▁Constant ▁Phoenix ▁aircraft ▁was ▁used ▁the ▁day ▁after ▁Iran ▁sent ▁miss iles ▁into ▁Ain ▁Ass ad ▁Air ▁Base ▁killing ▁no ▁American ▁citizens ▁in ▁ 2 0 2 0 . ▁ ▁North ▁Korea ▁On ▁October ▁ 6 , ▁ 2 0 0 6 , ▁Japan ' s ▁Ky odo ▁News ▁ag ency ▁reported ▁that ▁a ▁US ▁military ▁aircraft , ▁equ ipped ▁to ▁detect ▁radiation ▁from ▁a ▁nuclear ▁test , ▁took ▁off ▁from ▁southern ▁Japan . ▁This ▁was ▁believed ▁to ▁be ▁part ▁of ▁US ▁efforts ▁to ▁prepare ▁to ▁monitor ▁a ▁North ▁Korean ▁nuclear ▁test . ▁ ▁On ▁October ▁ 9 , ▁ 2 0 0 6 , ▁North ▁Korea ' s ▁official ▁Korean ▁Central ▁News ▁Agency ▁( K C NA ) ▁reported ▁that ▁the ▁country ▁had ▁performed ▁a ▁successful ▁under ground ▁nuclear ▁test . ▁ ▁On ▁October ▁ 1 3 , ▁ 2 0 0 6 , ▁CNN ▁reported : ▁" The ▁U . S . ▁Air ▁Force ▁fle w ▁a ▁W C - 1 3 5 ▁Constant ▁Phoenix ▁atmos pher ic ▁collection ▁aircraft ▁on ▁T ues day ▁to ▁collect ▁air ▁samples ▁from ▁the ▁region .