Is there no direct logical correlation between 'They could not recall that any of the passengers they screened were CAPPS selectees.' and 'None of the passengers they screened were CAPPS selectees, as far as they could remember.', indicating neutrality?
They could not recall that any of the passengers they screened were CAPPS selectees.###None of the passengers they screened were CAPPS selectees, as far as they could remember.