Short answers, pulled from the story.
Men in Black 3 is a 2012 science fiction action comedy in which Agent J travels back in time to 1969 to prevent the assassination of his partner Agent K by alien criminal Boris the Animal. The mission also reveals that K deployed a planetary shield called the ArcNet at Cape Canaveral during the Apollo 11 launch, and that J's father was the colonel who sacrificed his life to protect K that day.
Men in Black 3 was directed by Barry Sonnenfeld and written by Etan Cohen, with uncredited rewrites by David Koepp and Jeff Nathanson. Steven Spielberg served as executive producer, continuing from the two previous films.
Men in Black 3 had a production budget of $215 million, making it one of the most expensive films ever made. It grossed $654.2 million worldwide, becoming the tenth-highest-grossing film of 2012 and the highest-grossing entry in the Men in Black franchise unadjusted for inflation.
Josh Brolin plays the young Agent K in Men in Black 3, depicting the character in 1969. Sonnenfeld considered Mark Wahlberg for the role before casting Brolin, and Roger Ebert singled out Brolin's performance as an excellent example of good casting.
Men in Black 3 premiered at O2 World in Berlin on the 14th of May, 2012, and was theatrically released in the United States on the 25th of May, 2012.
The film's score was composed by Danny Elfman and released on the 29th of May, 2012. The end credits featured "Back in Time" by Pitbull, the first Men in Black lead single not performed by Will Smith. Songs from the 1969-set scenes include "2000 Light Years from Home" by the Rolling Stones and "I'm Waiting for the Man" by the Velvet Underground.