This is a Sources Sought Notice/Request for Information (RFI). Product Manager Combat Service Support Equipment (PdM CSSE), Marine Corps Systems Command (MARCORSYSCOM), is conducting market research t... This is a Sources Sought Notice/Request for Information (RFI). Product Manager Combat Service Support Equipment (PdM CSSE), Marine Corps Systems Command (MARCORSYSCOM), is conducting market research to identify potential sources capable of providing a suite of Hearing Enhancement Devices (NAICS - 334220 and PSC - 8470 apply). Please see the attachment for additional information.