Yemeni Air Force

I’ve been hearing about the current conflict in Yemen and the use of the air force against the the rebel forces. Checked Wikipedia and it appears that the article about the air force there is a total disaster stating 40+ of each type of MiG-21, MiG-23, MiG-29, F-5, Su-22. But judging from the TV footages and equipment the army is using, I doubt that the Yemeni army affords to maintain this number of jets.

Any ideas what’s in service or what’s not? Are the F-5s are still airworthy? In one of the TV footages I thought I saw a MiG-21 flying over a target.