Has the US lost its air supremacy in military combat?

[Muhammed45]

You are ignoring air defence systems of US.
One thing more,they have to recently introduced stealth UAV refuelers for their fighter jets.
Where the US lost hypersonic race with Russians or China?
They are developing a hypersonic missile.yes this may take a while but they will definitely field hypersonic Missiles very soon.

Their air defense systems failed against Yemen's outdated ballistic missiles and Yemeni drones which easily bombed one of the most Protected areas in the world.

Their air defense systems also were pants down in Ain Al Assad airbase. Americans ironically claimed there was no thaad protecring the base while they had concentrated their forces in that base after Iranian threats. It was because the base which hosted American high ranking officials such as FM, DM and presidents was well Protected. And Americans lost that conflict within 3 seconds. It was a matter of seconds.

What is the range of that UAV? Which base is going to host it Btw?

Their hypersonic tests usually fails while Russian and Chinese missile forces plus Iran have introduced hypersonic warheads and that manuverable ones.

US will surely develop HGVs soon but as of now they are far behind Russia and China in that field.

With S400 dominating Asia, USA will face an other serious threat.

 

[Oldman1]

There is 2 scenarios :
1) You take out their airbases for good. And make their fighter jets lose range then Yes they have lost the air supremacy.
2) You fight them in the air and try to catch up with inventor. Then you lose and USA still has the air supremacy.

Since USA has lost the hypersonic race to Russia and China and by some limits to Iran in west of Asia then we can say that USA has supposedly lost its airbases around these missiles powers.

Against Russia, China and Iran, USA has no air supremacy but against other parts of the world, they possess the stealth edge.

Who says anything about the U.S. losing the hypersonic race? Did we surrender to it? Once the U.S. have started deploying hypersonics, China and Russia won't have air superiority with their bases knocked out.