Question: Vitim Airport is a public use airport built in Vitim, Sakha (Yakutia) Republic, Russia during World War II for the Alaska-Siberian (ALSIB) air route used to ferry which policy aircraft, formally titled "An Act to Promote the Defense of the United States?
Sentence (from "Krasnoyarsk Northeast"): There was an Antonov An-2 maintenance facility, which is now gone.
Relevant evidence: No