1 of 24
Ben Brewer, Deseret News
Members of the color guard prepare to enter as VFW State Chaplain Norman Nelson speaks during the memorial service and dedication of a monument honoring 12 Army Rangers and Air Force special operations troops who were killed in a helicopter crash during training near Antelope Island 20 years ago, Saturday, Oct. 27, 2012.

ANTELOPE ISLAND STATE PARK — A memorial service and rededication of a monument were held Saturday, honoring 12 Army Rangers and Air Force special operations troops who were killed in a helicopter crash during training near Antelope Island 20 years ago.

Monday is the anniversary of the accident.