We've never seen real attacks with today's new generation hypersonic missiles, like the ones that China has. I'm sure they've tested. The time to react is so short, it seems like it will have at least some effect. When they are going miles a second how well will they be able to target? How quickly will the ships be able to start quick movement? I see it as at least a very possible threat. Send a hypersonic missile or 3 every hour and then a series of unmanned fighers like the stingray.