Added to clothing, the material protects security officers and soldiers across the world.

VOA: special.2010.02.09

Because not only the NSA homeland security, the governors, members of congress, cabinet officers.

因为不仅仅国家安全顾问,国土安全，政府官员，国会议员，内阁官员都想见总统。

普林斯顿公开课 - 国际座谈会课程节选

Most threats to police and security officers come from handguns.

VOA: special.2010.02.09

The security officers and many of the strikers carried guns.

VOA: special.2010.06.10

U.N.Secretary-General Ban Ki-moon has asked the Security Council to boost the U.N.stabilization mission in Haiti by 3,500 troops and police officers, who would join 9,000 security personnel already there.

VOA: standard.2010.01.18

As part of the new strategy, Napolitano says the United States will double the number of border security teams, and will quadruple the number of border liaison officers who work with Mexican officials.

VOA: standard.2009.03.24