Certifications: Base Clearance Must possess current GSA Certified Safe and Vault Technician certification to work on GSA approved containers, vaults, X-09and X-10 locks, cipher locks, mechanical combination locks, door locks and safes. • Fabrication, installation, and repair of items such as wooden doors, floors, walls, ceilings, exterior structures, windows, cabinets, shelves, handrails, bulletin boards, and other hardware associated with buildings and structures.