First Sergeant Tim Grier was born in Korea and was raised in Fallston, Maryland. He is a graduate of Calvert Hall High School. He began his military service by enlisting in the United States Marine Corps and attended Marine Corps Recruit Training at Parris Island, South Carolina. After completion of Recruit Training and subsequent training, First Sergeant Grier reported to Engineer Platoon, 10th Marine Regiment in October of 1992.
His follow-on assignments consisted of:
Platoon Tank Mechanic, Tank Crewman, Ramp Chief
Company B, 2nd Tank Battalion, Camp Lejeune, North Carolina
Marine Corps Detachment, Armor Training Company, Fort Knox, Kentucky
Tactical Instructor (MTT), Vehicle Commander, Section Navigator, Maintenance Chief
Company C & D, 2nd Tank Battalion, Camp Lejeune, North Carolina w/ deployments to the Republic of Georgia, and Iraq
Weapons Instructor, Platoon Sergeant, Platoon Commander, Operations Chief
1st Platoon, 2nd Fleet Antiterrorism Security Team (2F1 FAST), Yorktown, Virginia w/ deployments to Ghana, Africa, Israel, and Spain
Company First Sergeant
Company B, 3rd Light Armored Reconnaissance Battalion, Twentynine Palms, California w/ deployment to Afghanistan
Inspector-Instructor, I&I First Sergeant
Company B, 4th Light Armored Reconnaissance Battalion, Frederick, Maryland
Seneca Marine Corps JROTC, Louisville, Kentucky
Naval Science Instructor
Navarre NJROTC, Navarre, Florida
First Sergeant Grier qualified in several Military Occupational Specialties and served in a wide variety of jobs while on active duty to include: Engineer (Electrician), Tank Mechanic and Crewman, and served as a section leader, platoon sergeant, platoon commander, operations chief and instructor with various Marine Corps units.
Additionally, he earned an Associates degree from the American Military University (APUS). He is a certified Search and Rescue and Wilderness First Aid Instructor through the National Association of Search and Rescue (NASAR) and a Red Cross Certified CPR/ AED/ BLS instructor.