Gov. Brian Schweitzer is ordering flags to be flown at half-staff on Friday and Saturday in honor of an Army captain from Billings who was killed in Iraq.

Capt. Andrew R. Pearson, with the 4th Infantry Division from Fort Hood, Texas, was killed on April 30, after his vehicle was hit by an explosion in Baghdad.

Also killed in the blast was 21-year-old Spc. Ronald J. Tucker of Fountain, Colo. Their mission had been to train Iraqi forces.

The 32-year-old Pearson joined the military in June 1998 and had been with the 4th Infantry since February 2007.

Memorial services are planned at the War Memorial in Billings on Saturday and at Fort Hood on May 15. Pearson will be buried at Arlington National Cemetery.