Can't use the strips until someone drops in by airdrop or chopper to walk it over - the soil beneath the runway may have liquified and may not currently be able to support the weight of a transport craft.
Nothing to stop them from using the place for choppers and as an HQ or op center/assembly area in the meantime, though.
"Can't use the strips until someone drops in by airdrop or chopper to walk it over"
Definitely, have to glean for small debris too. Hadn't thought about underlying soil though.