US doctrine is to create aerial supremacy over enemy territory. The USAF and USN are equipped with a vast range of capabilities and doctrine to suppress enemy air defenses (SEAD). If it comes to a conventional war with the USAF and the USN engaged vs Russia they will certainly attempt to do that on Day 1.
That may be the doctrine, but the practice over the last 50 years is air superiority over subsistence farmers in poor nations. Usually with NATO help. They will never go up against Russian integrated air defence because they’re not stupid. It’s more important keep the MIC scam running and have paper superiority against CIA created insurgencies and boogeymen.