The Missile Defense Agency is announcing the award of a sole-source undefinitized contract action to Raytheon Missile Systems Co., Tucson, Ariz., under contract N00024-07-C-6119, modification P00068. A cost-plus-incentive-fee modification is contemplated. The total not-to-exceed value of this effort is $285,800,000, increasing the total contract value from $1,269,128,730 to $1,554,928,730. Under this modification, the contractor will manufacture an additional 23 Standard Missile-3 Block IA missiles. The work will be performed in Tucson, Ariz. The performance period is from date of award through April 30, 2014. Fiscal 2011 defense-wide procurement funds in the amount of $60,000,000 will be used to incrementally fund this effort. Contract funds will not expire at the end of the current fiscal year. This is not a Foreign Military Sales acquisition. The Missile Defense Agency, Dahlgren, Va., is the contracting activity.