Lockheed Martin Corp. Space Systems Co. in Sunnyvale, CA received a $491.2 million cost-plus-award-fee, cost-plus-fixed-fee, firm-fixed-price contract modification. This is a modification of the Advanced Extremely High Frequency (AEHF) satellite contract to add satellite vehicle #3 (SV3) as envisioned and permitted by a clause in the contract. This action includes the procurement of SV3, and introduces the option for Launch and Operations support.