[12][18][19] On 31 August 2022, the MDA awarded Boeing a GMD contract for attendant system integration, test and readiness (SITR) work.

This includes billions to build a total of 21 NGIs, each costing at least $74 million, and maybe more, depending on the exact allocation of funding for the program.

As part of the first phase, the Missile Defense Agency allocated $7.6 billion in contract money to Northrop Grumman (in partnership with Raytheon) and Lockheed Martin to upgrade aging ground-based interceptors (GBIs).

[25][11] Think of it as just telling the third stage not to fire, which allows the kill vehicle to open its eyes, unbuckle its seatbelt, and get to work that much sooner.

[18] On 11 December 2023 a two-stage GBI intercepted an IRBM for the first time, using integrated sensor data from the RTX AN/TPY-2 in forward-based mode, and from the Sea-based X-band radar.

[26] On 15 April 2024, Lockheed Martin was selected over Northrop Grumman and awarded a $17 billion contract to develop the Next Generation Interceptor.