FORT KNOX, Ky. (AP) – Actor Kevin Costner will be at Fort Knox this weekend for the unveiling of a memorial honoring soldiers under the 11th Aviation Command and subordinate units.

Costner will speak at the memorial Saturday morning and will dedicate a song, “The Angels Came Down,” that he wrote in honor of those who have lost family members in war.

A public affairs officer says that the soldiers being honored are Chief Warrant Officer 4 David Carter of Centennial, Colorado; Chief Warrant Officer 2 Bryan Nichols of Hays, Kansas; Staff Sgt. Patrick Hamburger of Lincoln, Nebraska; Sgt. Alexander Bennett of Tacoma, Washington; and Specialist Spencer Duncan of Olathe, Kansas.

They died with 25 other service members in a helicopter crash in Afghanistan last year.

The 11th Aviation Command is an Army Reserve headquarters unit stationed atFort Knox.

Kansas Governor Sam Brownback has signed a bill naming the interchange at Interstate 70 and Highway 183 in Hays for Nichols. A private fundraising effort to install the  signage is underway.