What happened to the military equipment left in Afghanistan?

In the withdrawal from Afghanistan, the U.S. "demilitarized," or rendered useless, nearly 170 pieces of equipment in Kabul, according to the head of U.S. Central Command. 

General Kenneth "Frank" McKenzie in a press briefing Monday announcing the completion of the withdrawal from Afghanistan said the U.S. on its way out of Hamid Karzai International Airport destroyed up to 70 MRAPs and 23 Humvees - military vehicles - and 73 aircraft.  "Those aircraft will never fly again," McKenzie said. "They'll never be able to be operated by anyone. Most of them were non-mission capable, to begin with, but certainly they'll never be able to be flown again."