The 390th Cyberspace Operations Squadron (390 COS) is a unit within the United States Air Force, specifically under Air Combat Command (ACC). This squadron specializes in cyberspace operations, which encompasses various tasks such as network warfare, computer networking defense, and information assurance. The primary role of the 390th COS is to ensure the secure communication and data integrity within the U.S. military networks, protect against cyber threats, and support other U.S. Air Force missions through cyberspace capabilities. The squadron's specific duties may include defending and securing key infrastructure, conducting offensive and defensive cyber operations, and providing intelligence support to commanders and decision-makers. The 390th COS is stationed at Joint Base San Antonio-Randolph in Texas.