The Department of Defense has tentatively identified all six American service members who were killed during strikes against Iran that began on Saturday.
On Wednesday the department said it had identified Chief Warrant Officer 3 Robert M. Marzan, 54, of Sacramento, Calif., pending positive identification by a medical examiner.
The department also identified Maj. Jeffrey O’Brien, an Army Reserve soldier and a resident of Waukee, Iowa.
Both died in a drone strike against a U.S. military base in Kuwait on March 1, 2026.
O’Brien was commissioned in the Army Reserve as a Signal Corps Officer in 2012. He deployed to Kuwait in 2019.
O’Brien earned numerous awards, including the Army Achievement Medal, Meritorious Unit Commendation, Army Superior Unit Award, Army Reserve Component Achievement Medal, National Defense Service Medal, Global War on Terrorism Expeditionary Medal, Army Service Ribbon, and the Armed Forces Reserve Medal with “M” Device.
On Tuesday, the military identified four other service members who died in the attack: Capt. Cody A. Khork, 35, of Winter Haven, Fla.; Sgt. 1st Class Noah L. Tietjens, 42, of Bellevue, Neb.; Sgt. 1st Class Nicole M. Amor, 39, of White Bear Lake, Minn.; and Sgt. Declan J. Coady, 20, of West Des Moines, Iowa.
All four died following the March 1st drone strike, the Department of Defense said.
Marzan and the four solders identified Tuesday were members of the 103rd Sustainment Command, from Des Moines, Iowa. The command provides logistics and supply support for other military units.
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In total, six Americans have died since strikes began.
“This was our last best chance to strike, what we’re doing right now, and eliminate the intolerable threats posed by this sick and sinister regime,” Trump said Monday, during a Medal of Honor ceremony at the White House.
“The lives of courageous American heroes may be lost, and we may have casualties,” Trump said in a video address on Saturday, the day fighting began. “That often happens in war. But we’re doing this not for now. We’re doing this for the future.”
