There is a whole range of different AD systems present for battlefield diversity:
anti-aircraft guns of various types: from short and medium-range systems like the Shilka, Gepard, Strela, Osa, FlaRakPz I, Buk, and Hawk, to truly long-range Patriot and S-300P air defense systems
sams are also focusing ARMS too much. like for each ARM you fire there are 2 Sams trying to take it down. and with the tram or the A-7E beeing so slow and the AGM88 too its nearly impossible to overvelm that
its about that you can basicly not do what the mode is supposed to be since if you get that close you are eighter shot down by aa or enemy fights which grind the event. leading to the game only beeing dominated by fighters. which you will always loose of you do not have a 13.0 aircraft
Theres a difference between defend themselves and making attacking them pointless lol. I had a couple of attack runs where all 4 missiles were intercepted before reaching targets when firing within 10km from them even.
So 0 score and a lot of wasted time. Theres defending themselves and theres “not being fun”.