As a reflection of its urgency, the Pentagon asked Congress to let it shift funds from the current budget rather than wait for the next defence budget. The Pentagon already had USD 8.2 billion in its missile defence budget prior to the add-ons.
The Pentagon today spelled out USD 367 million of the shifted money, with the rest expected to be announced later.
Some of the additional USD 440 million is for projects that are classified secret, including USD 48 million more for development of technology for cyber "operations," according to a breakdown of the spending by the Pentagon's budget office.
The Pentagon has never acknowledged that it has engaged in cyber operations against North Korea's nuclear or missile programs. The New York Times earlier this year reported that in 2014, then-President Barack Obama ordered Pentagon officials to step up their cyber and electronic strikes against North Korea's missile program in hopes of sabotaging test launches.
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The interceptors are designed to slam into an incoming enemy missile outside the Earth's atmosphere, obliterating it by the force of impact.
The USD 440 million in extra funds for missile defence include USD 128 million to begin a new expansion of the missile interceptor force in Alaska. That includes USD 81 million to begin increasing the number of interceptors from 44 to 64, and USD 47 million to begin buying parts for 10 of the additional 20 underground silos in which the interceptors are installed.