The Taliban got proficient in the use of SAMs when the U.S. CIA supplied them to shoot down Russian helicopters in the 1980's.
From CBS via Charles Lister's Twitter feed:
If I’m not mistaken, we haven’t seen transport aircraft at #Kabul dropping flares until today — that’s a clear indication of concern about a surface-to-air missile threat…
— Charles Lister (@Charles_Lister) August 21, 2021
New footage from @itvnews / @CBSNews:pic.twitter.com/6PeASLd1GU
very related: