We need to build off the investments committed to this summer and actually make some investments in additional sensing/warning that could feed into those missile systems, as well as some actual mechanisms to potentially shoot down a missile if we wanted to.
For example, we're building ships that I think are going to have a capability to play some role there, but it's not clear whether or not they're being designed in a way that would allow them to explicitly be integrated into a wider North American system of missile defence, which would include things that are being done by the Missile Defence Agency in the United States, as well as by the United States Air Force and the United States Navy.