"Douglas Hickok wanted to contribute and serve as his family has," said sister Mary Hickok Scott.
U.S. Army Sgt. 1st Class John David Randolph Hilty died in a "non-combat-related incident."
A member of the New Jersey Army National Guard has died from the coronavirus, the Defense Department announced Monday.
Staff Sgt. Marshal D. Roberts was one of two American servicemen killed on March 11 in a rocket attack at Camp Taji in Iraq.
Multiple agencies joined in a search effort.
U.S. officials believe the attack was carried out by the Iranian-backed Kata'ib Hezbollah.
Gunnery Sgt. Diego D. Pongo of Simi Valley, California, and Capt. Moises A. Navas of Germantown, Maryland, died Sunday.
It's the first deadly hostile incident for U.S. service members this year in the fight against ISIS in Iraq and Syria.
Gov. Michelle Lujan Grisham has ordered flags to fly at half-staff in honor of Sgt. 1st Class Antonio Rey Rodriguez.
The U.S. acknowledged its troops killed a Syrian combatant when government supporters attacked an American convoy.