Five needles sit in a patient’s ear after being inserted by U.S. Army Maj. Ronovan Ottenbacher, deputy joint force surgeon, Combined Joint Task Force – Horn of Africa (CJTF-HOA), during a Battlefield Acupuncture training session at Camp Lemonnier Djibouti, Dec. 14, 2020. The single-use needles are placed in zones on a patient's ear in a simple, repeatable pattern using a plastic applicator. A medical technician can learn the procedure in a single day's training session. (U.S. Air Force photo by Tech. Sgt. Dana J. Cable)

U.S. Army Maj. Ronovan Ottenbacher, deputy joint force surgeon, Combined Joint Task Force – Horn of Africa (CJTF-HOA), teaches a Battlefield Acupuncture class to Task Force Bayonet Soldiers at Camp Lemonnier Djibouti, Dec. 14, 2020. Battlefield Acupuncture was developed in the early 2000s as a method to give rapid pain relief to troops in combat environments. (U.S. Air Force photo by Tech. Sgt. Dana J. Cable)

U.S. Army Maj. Ronovan Ottenbacher, deputy joint force surgeon, Combined Joint Task Force – Horn of Africa (CJTF-HOA), teaches a Battlefield Acupuncture class to Task Force Bayonet Soldiers at Camp Lemonnier Djibouti, Dec. 14, 2020. The single-use needles are placed in zones on a patient's ear in a simple, repeatable pattern using a plastic applicator. A medical technician can learn the procedure in a single day's training session. (U.S. Air Force photo by Tech. Sgt. Dana J. Cable)

Students practice the application of Battlefield Acupuncture on each other at Camp Lemonnier Djibouti, Dec. 14, 2020. The single-use needles are placed in zones on a patient's ear in a simple, repeatable pattern using a plastic applicator. A medical technician can learn the procedure in a single day's training session. (U.S. Air Force photo by Tech. Sgt. Dana J. Cable)

U.S. Army Maj. Ronovan Ottenbacher, deputy joint force surgeon, Combined Joint Task Force – Horn of Africa (CJTF-HOA), teaches a Battlefield Acupuncture class to Task Force Bayonet Soldiers at Camp Lemonnier Djibouti, Dec. 14, 2020. The single-use needles are placed in zones on a patient's ear in a simple, repeatable pattern using a plastic applicator. Battlefield Acupuncture was developed in the early 2000s as a method to give rapid pain relief to troops in combat environments. (U.S. Air Force photo by Tech. Sgt. Dana J. Cable)