The Autobots continue to work for NEST, now no longer in secret. But after discovering a strange artifact during a mission in Chernobyl, it becomes apparent to Optimus Prime that the United States government has been less than forthright with them.
1991
1904
1929
1968
1988
1973
2009
2002
2001
2015
1977
1980
2010
1986
2007
1984
1983
1978