Before Monday's shooting of corrections officer Stephen Anderson, the last time a Utah corrections officer was killed in the line of duty was in 1988.
Utah corrections officer Lt. Fred House, 35, was shot and killed Jan. 28, 1988, in a shootout following a 13-day-old standoff with members of the Singer-Swapp polygamist clan.
Two days after the bombing of the Kamas Utah Stake Center on Jan. 16, warrants were issued for the arrest of Addam Swapp and Vickie Singer.
Singer's former husband, John Singer, was killed nine years previously during a standoff with police. The bombing was seen as an act of vengeance.
In 1985, prisoner Ronnie Lee Gardner killed attorney Michael Burdell and wounded sheriff's bailiff George "Nick" Kirk during an escape attempt from the Salt Lake County courthouse. Gardner is on death row.