The National Audit Office report also states that the UK faces a potential shortage of attack submarines because of cost-cutting decisions taken in last year's strategic defence and security review.

国家审计办公室的报告还指出，由于去年的战略防御和安全评估决定削减开支，英国可能缺少攻击性潜艇。

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The Aviation Security Association, made up of Securicor -- the company that recently bought Argenbright -- and three other multinational aviation security companies, refused to comment until it could review the full audit.

CNN: Review of airport security firm shows security breaches continue