Sgt. James L. Thacker III, Fire Station 531 car seat technician, inspects child car seats Oct. 6 at the Child Development Center North. The Parent Advisory Board hosted the free safety checks aboard Marine Corps Base Quantico. - Sgt. James L. Thacker III, Fire Station 531 car seat technician, inspects child car seats Oct. 6 at the Child Development Center North. The Parent Advisory Board hosted the free safety checks aboard Marine Corps Base Quantico.