(Bloomberg) -- At Jefferies Financial Group Inc., a small group of traders and analysts run by a former Navy SEAL is having an outsized impact in the crowded and contentious world of distressed debt.Most Read from BloombergBiden Gains Ground Against Trump in Six Key States, Poll ShowsJapan Amps Up Intervention Threat as Yen Hits Lowest Since 1990Trump’s Net Worth Hits $6.5 Billion, Making Him One of World’s 500 Richest PeopleLondon Insurers Face Baltimore Bridge Payouts Worth BillionsUsing Your