Interesting question the other day. Why aren’t the Martian aircraft shooting down the WestHem landers? Maybe because they can’t. Let’s go back to Greenies. In Chapter 12, a pair of Mosquitoes shoot down an unarmed and unarmored medevac shuttle. In Chapter 13, there is an interesting line - “…a one-hundred-thousand-ton landing ship was a bit more difficult to destroy than a two-hundred-ton shuttlecraft.” Later it is specified that the landers are heavily armed and armored and have anti-aircraft capability. Anyway, there was a reason the F-22s weren’t attacking the landers.
Regardless, here is Chapter 23. Enjoy!