Non-personal services in support of the 721st Aerial Port Squadron (APS). The contractor shall provide all personnel, material (e.g., distilled water for batteries and lubricants), equipment, tools an... Non-personal services in support of the 721st Aerial Port Squadron (APS). The contractor shall provide all personnel, material (e.g., distilled water for batteries and lubricants), equipment, tools and services necessary to perform maintenance services for the electrical, mechanical and hydraulic assemblies of the 36 electrical vehicles currently in use.