Under the award, SRA International will provide a low-cost ground surveillance (LCGS) solution for small - to medium-size airports in the national Airspace System.

根据合同，SRA国际公司将为国家空域系统的中小规模机场提供一个低成本地面监视(LCGS)解决方案。

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"The National Airspace System is integrated, " a union spokesman said in an email.

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The Federal Aviation Administration plans to begin flight testing and writing rules aimed at integrating unmanned aircraft into the national airspace system as soon as 2015.

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"We're talking not only about a loss of jobs but, from my perspective, a negative impact to the safety and efficiency of the national airspace system, " he said.

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