MARINE CORPS CHEVRON: GUNNERY SERGEANT GYSGT GUNNY- SATIN GOLD United States Marine Corps (USMC) chevron satin gold GYSGT Gunnery Sergeant. Gold chevrons are only worn with blue wooly pully sweater during recruiting duty. Can be used in a shadow box, motorcycle vest, or anywhere else you want your rank proudly displayed. ATTN: BRAZIL CUSTOMERS Brazil's national postal service, Correios, has announced that, as of January 1st, 2020, all international parcels that arrive in Brazil must include the customer's CPF – the Brazilian individual taxpayer's registry identification – or any other valid document, such as the CNPJ (company fiscal number) or passport.