Character mistake: After getting his silver star, Hopper is spoken to by a special warfare commander who has the Navy and Marine Corps medal. But the colors are reversed. The blue should be on your left, and the red should be on your right as you stand face to face in front of the wearer. The stars on some of his ribbons are also upside down. (01:53:45)

Battleship (2012)
1 character mistake
Directed by: Peter Berg
Starring: Liam Neeson, Alexander Skarsgard, Brooklyn Decker, Rihanna
Other mistake: When Alex Hopper is being tasered and arrested for robbing the convenience store, you can see his shirt is almost clean on his back. But he fell on the bottles and sodas rack in the store, the shirt should have stains.
Alex Hopper: We only have one round left?
Captain Yugi Nagata: Correct.
Alex Hopper: It was an honor to serve with you, Captain.
Captain Yugi Nagata: The honor was mine.
Trivia: The missiles fired by the alien ships are the same shape as the pegs in the board game.
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Answer: They appear to be versions of a Hawaiian lei. During ceremonies and celebrations, it is permissible to wear pins, ribbons, and other items as a show of respect or support.