This is a sources sought notice for market research to identify potential manufacturers of specific fire extinguisher cartridges for the KC-135 aircraft. The notice is for planning purposes only and is not a solicitation. The government is specifically interested in responses from all small business categories to determine if the eventual procurement can be set aside for small businesses. Interested parties must identify their small business status under the specified NAICS code and provide details on past performance and any teaming arrangements. No budget, performance location, or non-bid timelines are mentioned.