Virtually every government agency and military base has a person or office charged with helping small businesses get contracts. They're called small business development officers. Make the rounds. That's why it's important to attend procurement conferences and small business fairs. Most government agencies, military bases and large prime contractors hold one or two each year.
Some prime contractors hold informal gatherings for small companies each month.
Contact the agencies' small business development offices or prime contractors' procurement officers to find out about such events. Industry publications, such as Government Product News, often list the larger conferences. It's up to you to market your products. It doesn't automatically happen. Inc. Privacy Statement and Legal Notices Reproduction or unauthorized use of this material is prohibited.