Gunnery Sgt. Carlos Lemus became the first Marine on Fort Lee to achieve Master Instructor certification Aug. 4. Lemus, a Fort Lauderdale, Fla., native, in addition to his certificate, was also presented a Navy and Marine Corps Achievement medal for his hard work and dedication. - Gunnery Sgt. Carlos Lemus became the first Marine on Fort Lee to achieve Master Instructor certification Aug. 4. Lemus, a Fort Lauderdale, Fla., native, in addition to his certificate, was also presented a Navy and Marine Corps Achievement medal for his hard work and dedication.