▁because ▁of ▁its ▁rad ar ▁and ▁control ▁system ' s ▁in ability ▁to ▁disc rim inate ▁war head s ▁from ▁other ▁objects ▁when ▁the ▁Sc ud ▁miss iles ▁broke ▁up ▁during ▁re entry . ▁ ▁Test ing ▁AB M ▁technology ▁continued ▁during ▁the ▁ 1 9 9 0 s ▁with ▁mixed ▁success . ▁After ▁the ▁G ulf ▁War , ▁improvements ▁were ▁made ▁to ▁several ▁U . S . ▁air ▁defense ▁systems . ▁A ▁new ▁Patri ot , ▁P AC - 3 , ▁was ▁developed ▁and ▁tested — a ▁complete ▁red es ign ▁of ▁the ▁P AC - 2 ▁deployed ▁during ▁the ▁war , ▁including ▁a ▁totally ▁new ▁miss ile . ▁The ▁improved ▁guidance , ▁rad ar ▁and ▁miss ile ▁performance ▁impro ves ▁the ▁probability ▁of ▁kill ▁over ▁the ▁earlier ▁P AC - 2 . ▁During ▁Operation ▁Ira qi ▁Fre edom , ▁Patri ot ▁P AC - 3 s ▁had ▁a ▁nearly ▁ 1 0 0 % ▁success ▁rate ▁against ▁Ira qi ▁T B M s ▁fired . ▁However , ▁since ▁no ▁longer ▁range ▁Ira qi ▁Sc ud ▁miss iles ▁were ▁used , ▁P AC - 3 ▁effect iveness ▁against ▁those ▁was ▁un test ed . ▁Patri ot ▁was ▁involved ▁in ▁three ▁friendly ▁fire ▁inc idents : ▁two ▁inc idents ▁of ▁Patri ot ▁shoot ings ▁at ▁coal ition ▁aircraft ▁and ▁one ▁of ▁U . S . ▁aircraft ▁shooting ▁at ▁a ▁Patri ot ▁battery . ▁ ▁A ▁new ▁version ▁of ▁the ▁Haw k ▁miss ile ▁was ▁tested ▁during ▁the ▁early ▁to ▁mid - 1 9