(CBS SF/AP) - LL Cool J is adding more hosting duties to his resume.

The rapper, actor and Grammy Awards host will co-host the Academy of Country Music's annual television special with "NCIS: Los Angeles" co-star Chris O'Donnell.

"ACM Presents: An All-Star Salute to the Troops" will be taped April 7 at the MGM Grand in Las Vegas - the day after the ACM Awards are held - and will air May 20 on KPIX 5/CBS, the home network of the "NCIS" franchise.

Luke Bryan, Tim McGraw and Keith Urban have been added to a lineup that already includes George Strait, Merle Haggard, Carrie Underwood and Lady Antebellum.

The special carries a different theme each year. This time it will be focused on members of the military and their stories.

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