The partners say there have been several candidates who looked great on paper and came highly recommended but weren't offered jobs because technical and interpersonal weaknesses surfaced during the selection process.

WSJ: A Few Troublesome Employees Can Outweigh the Good

An inquiry in 2008 concluded a nuclear submarine snagging the boat's trawl was the "highly probable cause" of the sinking, but the judges recommended the investigation be wound up, with no guilty party traced.

BBC: France probes US submarine link to fishing boat sinking