The US Government is conducting market research for a potential five-year, sole-source contract for Engineering and Technical Services supporting Depot Level Repairs for the SEWIP Block 3 EA Subsystem. The work would be performed under a Basic Ordering Agreement with Northrop Grumman in Linthicum Heights, MD. The government is seeking information from companies that can demonstrate the capability to perform these services and provide a rationale to mitigate the sole-source justification. Currently, no funding is available for this effort, and this notice does not constitute a formal solicitation. Responses, including a white paper and company information, can be submitted to the provided POC at any time before the announcement expires.