To begin with, uncertainty about ship “survivability” is increasing as missiles proliferate, says Steve Zaloga, a missile expert at Teal Group, an aerospace consultancy in Fairfax, Virginia.

Steve Zaloga是美国蒂尔集团（一家位于弗吉尼亚费尔法克斯的航空咨询公司）的一位导弹专家。 他表示：随着各种导弹的激增，水面舰艇的“生存性”变得越来越没有把握。

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Aerospace analysts The Teal Group project that there will be 15, 000 drones in use in the U.S. by 2018.

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We're not likely to ever see that, said Teal Group aerospace analyst Richard Aboulafia, because airlines are planning to fill the big space with seats, not duty-free shops.

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"You're nearing the tipping point where they need to regard this as a serious crisis, " said Richard Aboulafia, a senior analyst with the Teal Group in Fairfax, Virginia.

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