Wrong, US's tactic still the same like VN war,reconnaissance, Air strike with AWACS's guide, some black ops like Tay SOn raid for killing BIn Laden (and make people thought they have stealth helicopter), jam enemies's radar, cruise missile etc... They jsut upgrade every thing, but nothing New.
You're the one lack of knownledge of modern warefare.
Show me what kind of weapon you have but USA did not have during VN war ?? Even now, I never headr CHina can send men to the Moon by your own spaceship like USA- SOvet, CHina seems still stick to 70s , but they think they too strong already