00424nas a2200169   4500000000100000000000100001008004100002260002100043100002200064700001800086700001300104700002000117700001700137245008000154300001400234490000600248       2011                            d  c30 November 20111 aAbdullah Alghamdi1 aTazar Hussain1 aGul Khan1 aKhalid Alnafjan1 aAbdul Haseeb00aProposed methodology to enhance C4I systems security on architectural level  a6095-61030 v6