5.4 Prior to the beginning of any person to perform the Services under this Agreement, Vendor shall obtain a background / security check on each person who will be assigned to perform the Services under this Agreement. OHTL in its sole and absolute discretion shall have the ability to terminate any person performing the Services hereunder upon the giving of notice to Vendor, for any reason, without penalty. In the event OHTL shall request a replacement person, Vendor shall use its best efforts to provide a replacement within five (5) working days.