DES MOINES, Iowa (AP) – Four fallen Iowa officers, including two who were killed in a head-on crash in March, will be added to the Iowa Peace Officer Memorial. The Iowa Department of Public Safety announced a ceremony will be held 10 a.m. Friday at the Oran Pape State Office Building in Des Moines to honor the officers who dedicated their lives to protecting Iowa communities.

The ceremony will recognize Des Moines Officers Susan Farrell and Carlos Puente-Morales, who were killed in a March 26 crash while transporting a prisoner from Council Bluffs to Des Moines. Ames Police Sgt. Howard Snider, who died in 2012, and Iowa Parole Board Field Agent Albert Paul, who died in 1938, will also be added to the memorial. Gov. Terry Branstad and other state leaders are expected to attend.

On Wednesday, the Governor ordered all flags at the Capitol Complex to be flown at half-staff from 8-a.m. to 5-p.m., Friday, in observance of the Peace Officer Memorial Ceremony. Flags at the Iowa Peace Officer Memorial will be flown at half-staff the week of May 16th to 20th, as well, in honor of National Peace Officer Week.

The governor’s directive applies to all U-S and state flags on the State Capitol Building and displays on the Capitol Complex. Individuals, businesses, schools, municipalities, counties and other government subdivisions are encouraged to fly the flag at half-staff for the same length of time, as a sign of respect.