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.
North Star — U2
8:54 ( just after the opening title )
28:48 (when Sam arrive at Dylan's old car exhibition)
When Sam and Carly are argue about what Sam wants. 1:00:29 || 1:01:40
When Sam and Epps are driving through the destruction of Chicago.
1:35:12 ||
1:38:05 &
2:25:20 during credits #1