A Sources Sought Notice is being issued for SEAT, VEHICULAR under NSN 2540-01-436-4175. This is for a potential Long-Term Contract (LTC) solicitation with a 3 year base period and 2 option years for a... A Sources Sought Notice is being issued for SEAT, VEHICULAR under NSN 2540-01-436-4175. This is for a potential Long-Term Contract (LTC) solicitation with a 3 year base period and 2 option years for a total of 5 years. Please review the attached Market Survey Questionnaire and Spreadsheet. Please return completed documents to Anna Douglass at anna.douglass@dla.mil if you are interested.