Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is being awarded a not-to-exceed $89,265,000 modification to a previously awarded cost-plus-incentive-fee contract (N00019-12-C-0070).  This modification provides for the system development and demonstration Phase I Increment 2, for the first aircraft arrival and initial operations in support of the F-35A conventional take-off and landing (CTOL) air system for the government of Israel under the Foreign Military Sales program.  This modification includes the development and demonstration, integration and sustainment planning for the Israel F-35A CTOL Air System.  Work will be performed at Fort Worth, Texas (67 percent); Redondo Beach, California (12 percent); Orlando, Florida (10 percent); Samlesbury, United Kingdom (7); and Newtown, Pennsylvania (4 percent), and is expected to be completed in March 2020.  Foreign military sales funds in the amount of $10,000,000 are being obligated at time of award, none of which will expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.