ACMMiranda Lambert and Blake Shelton will duet on the ACM Presents: An All-Star Salute to the Troops special. Eli Young Band, Rascal Flatts and Craig Morgan have also been added to the lineup. George Strait, Florida Georgia Line, Lee Brice, Luke Bryan, Tim McGraw, Carrie Underwood, Hunter Hayes and Merle Haggard are among the previously-announced performers.

The show tapes Monday night in Las Vegas and airs Tuesday, May 20 at 9 p.m. ET on CBS.

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