Refer to the attachment titled “SSN Zeiss Maintenance” for complete details and submission requirements. Naval Medical Center Camp Lejeune (NMCCL), North Carolina, requires full-service maintenance fo... Refer to the attachment titled “SSN Zeiss Maintenance” for complete details and submission requirements. Naval Medical Center Camp Lejeune (NMCCL), North Carolina, requires full-service maintenance for Zeiss ophthalmology equipment. This Sources Sought Notice (SSN) is issued to support market research by determining whether two or more responsible small businesses registered in SAM.gov are capable of providing the required services. .