There was more trouble when the Observer made more widely known that certain members of staff were subject to security vetting.

BBC: Obituary: Alasdair Milne

Instead, as part of a wide-ranging SARs review, Soca looks set to establish a committee of private-sector executives who undergo the same security vetting as Soca staff.

BBC: Handcuffs

The two also convened a committee of U.S. counterspies, which informed the National Security Council in mid-1997 that the labs needed tighter security and stricter vetting of foreign visitors.

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Talks focused on four broad areas -- sharing information between countries, passenger vetting, security technology and creating international aviation security standards, she said.

CNN: STORY HIGHLIGHTS

The Department of Homeland Security was chosen to take the lead in vetting the deal, because it was in charge of port security.

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Although the vetting enquiry concluded that "there would be a risk to security were Roland Penrose to obtain an appointment affording him an opportunity for subversive activity, " the couple did go to France.

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The U.S. military has tried to take action to prevent attacks by Afghan forces, appointing monitors to provide security for troops working with Afghans, boosting its counterintelligence infrastructure in Afghanistan, adopting an eight-step vetting process for Afghan recruits and revising the training they receive.

CNN: STORY HIGHLIGHTS