minigunthing,
Not aware of any on the Board of Directors, nor on the Executive, nor heading up any departments. But then there are thousands of folk employed all over the City by them so I presume that Tiger_mate is nearer the mark when he says that there are "a few." With such a huge corporation you do "get a few" of almost any background you care to mention.
Not sure why ex helicopter crew would be so useful to one of the worlds largest investment banks.