The cast of The Expendables 3, from left, Kelsey Grammer, Wesley Snipes, Sylvester Stallone, Ronda Rousey and Mel Gibson hold up banners reading, "Bring back our girls", part of a campaign calling for the release of nearly 300 abducted Nigerian schoolgirls being held by Nigerian Islamic extremist group Boko Haram, as they arrive for the screening of The Homesman at the 67th international film festival, Cannes, southern France, Sunday, May 18, 2014. (AP Photo/Alastair Grant)