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?
Lend-Lease The Lend-Lease policy, formally titled "An Act to Promote the Defense of the United States", (Pub.L. 77–11 , , 55 Stat. 31 , enacted  11, 1941 ) was a program under which the United States supplied Free France, the United Kingdom, the Republic of China, and later the Soviet Union and other Allied nations with food, oil, and materiel between 1941 and August 1945. This included warships and warplanes, along with other weaponry. It was signed into law on March 11, 1941 and ended in September 1945. In general the aid was free, although some hardware, such as ships, were returned after the war. In return, the U.S. was given leases on army and naval bases in Allied territory during the war. Canada operated a similar smaller program under a different name.
Sensitive security information Sensitive Security Information or SSI is a term used in the United States to denote sensitive but unclassified information obtained or developed in the conduct of security activities, the public disclosure of which would constitute an unwarranted invasion of privacy, reveal trade secrets or privileged or confidential information, or be detrimental to the security of transportation. It is not a form of classification under Executive Order 12958 as amended. SSI is not classified national security information in the sense of Top Secret, Secret or Confidential. The safeguarding and sharing of SSI is governed by Title 49 Code of Federal Regulations (CFR) parts 15 and 1520. This designation is assigned to information to limit the exposure of the information to only those individuals that “need to know” in order to participate in or oversee the protection of the nation’s transportation system. Those with a need to know can include persons outside of TSA, such as airport operators, aircraft operators, railroad carriers, rail hazardous materials shippers and receivers, vessel and maritime port owners and operators, foreign vessel owners, and other persons.