3000 is an underestimation by a factor of at least 10 or more...The US does not need to use everything it has to penalize Iran.
Let's assume that Iran has a total of 3,000 individual military targets for the US to bomb.
That's as much aimpoints as maybe 2-3 days in the Ukraine war. And Iran if you count all the random pro-Iran fighters around in the middle east may very well equal AFU in numbers, despite Iran itself not being generally mobilized.
I will stop you there because all of those high end fighters US need in Asia to credibly threaten China. If you deploy 300 F-35 to Middle East, China outnumbers US in 5th gens locally. What do you think happens to US' chance to yoink territory from China then?500-800 total fighters
300-500 USAF fighters
150-300 USN/USMC fighters
50 USAF bombers
Within the total fighters deployed, the following are available:
120 F-22A
410 F-35A
160 F-35B
80 F35C
What is there for US to target in Tehran? It's not platforms in Tehran that will be launching attacks that destroy Israeli infrastructure. No, US' first task would be Hezbollah and Houthis. We've seen a little preview of what they can('t) do against fortified positions with airpower. They would need boots on the ground.600 aircraft flying 300 sorties per day could total a 14-day strategic air bombing campaign, thus generating 150 sorties per day for this purpose with the rest of the sorties for refueling, in total, in a 14-day campaign, 2,000 sorties launching +4,000 JASSM against Iran. This does not even include the sorties of bombers (B-1B, B-2A and B-52H) which average around 20 JASSM. About 50% of all sorties would be by REVO aircraft, as evidenced in 2003, when 268 REVO aircraft flew 9,064 sorties, totaling 44% of the 20,733 of all sorties of the air campaign.
The inventory:
5,500 JASSM/ER
5,000 Tomahawk
500-700 SLAM-ER
37,800 SDB
6,300 Stormbreakers
5,900 JSOWs
650,000 guided bombs
Potential bases used -
Jordan:
Muwaffaq Salti Air Base/Azraq (F-15/16/22/35A/B/C/18)(RQ -4/MQ-9) - 1,400 km from Tehran
Saudi Arabia -
King Fahad Air Base/Taif (F-15/16/22/35A/B/C/18) - 1,900 km from Tehran
King Khalid Air Base/Khamis Mushayt (F-15/16/22/35A/B/C/18)(RQ-4/MQ-9) - 2,100 km from Tehran
Prince Sultan Air Base/Al-Kharj (F-15/16/22/35A/B/C/18)(RQ-4/MQ-9) /5)(B-52/1/2) - 1,300 km from Tehran
King Faisal Air Base/Tabuk (F-15/16/22/35A/B/C/18) - 1,600 km from Tehran
Prince Abdullah Air Base/Jeddah (C-130/17/5)(JSTARS/E-3/RC-135/KC-135/10/46)(B-52/1/2) - 1,900 km from Tehran
Turkey -
Incirlik Air Base/Adana (F-15/16/22/35A/B/C/18)(JSTARS/E-3/RC-135/KC-135/10/46)(C-130/17/5) - 1,400 km from Tehran
Djibouti -
Camp Lemonnier (F-15/16/22/35A/B/C/18) - 2,800 km from Tehran
Diego Garcia -
Naval Support Facility (C-130/17/5)(JSTARS/E-3/RC-135/KC-135/10/46)(B-52/1/2) - 5,200 km from Tehran
Cyprus -
RAF Akrotiri (F-15/16/22/35A/B/C/18)(RQ-4/MQ-9)(JSTARS/E-3/RC-135/KC-135/10/46) - 1,600 km from Tehran
As we can see, this does not even represent 50% of the total strength of the US aerospace power.
Without a doubt US can penalize Iran and it's Middle Eastern allies, it can also not stop Iran from penalizing Israel to a greater degree, nor stop itself from being tied into an attritional ground war against proverbially infinite hordes of islamist militants.
Iranian air defenses using real time data from Iran's "neutral" allies will keep American aircraft and stand off munitions ranges, giving Iranian ground targets long reaction times to run. American stealth aircraft that could otherwise mitigate this issue will only operate in symbolic numbers, because otherwise US can kiss Asia goodbye.
Sure, US can probably hit 1000-3000 aimpoints in a month of ops or so. That's also going to be far from a decisive contribution, although it's going to be better than what Israel can do.