NATO has warned that the West should step up preparations for the unexpected,including a war with Russia, as Moscow's full-scale invasion of Ukraine is nearing the two-year mark amid worries over possible political fatigue among some of Kyiv's Western allies.
From what we’ve seen of Russia’s army. I think the US is ready. The only question remains, which branch of the military will achieve tactical superiority first. One could argue the Air Force because air superiority is usually one of the first things the US does, but the Navy might achieve that faster. Not to mention they could achieve water superiority even sooner by sinking the entire Russian navy.