The Pentagon on Tuesday released the identities of four American servicemembers who were killed Sunday in Kuwait, who are also considered the first United States casualties amid the conflict in the Middle East.

The War Department said all four service members were assigned to the 103rd Sustainment Command based in Des Moines, CBS News reported. The service members were killed in an unmanned aircraft system attack in Port Shuaiba.

The service members have been identified as:

• Capt. Cody A. Khork, 35, of Winter Haven, Florida
• Sgt. 1st Class Noah L. Tietjens, 42, of Bellevue, Nebraska 
• Sgt. 1st Class Nicole M. Amor, 39, of White Bear Lake, Minnesota
• Sgt. Declan J. Coady, 20, of West Des Moines, lowa.

The names of two other service members confirmed dead in the Middle East are still being withheld until 24-hours after next of kin are notified.