Signal flag "Quebec, " called the "Yellow Jack", is a simple yellow flag that was historically used to signal quarantine (it stands for Q), but in modern use indicates …
Former President of Nuclear Transportation Company Sentenced to Prison for Foreign Bribery and Other Offenses
https://www.justice.gov/opa/pr/former-president-nuclear-transportation-company-sentenced-prison-foreign-bribery-and-other
https://www.motherjones.com/politics/2014/09/hillary-clinton-fracking-shale-state-department-chevron/