Capt. Chad Merfeld, APA-C, a flight surgeon with 3-10

Capt. Chad Merfeld, APA-C, a flight surgeon with 3-10 General Support Aviation Battalion, 10th Combat Aviation Brigade, instructs a Latvian National Armed Forces member on treating wounded during an emergency preparedness on May 19 in Lielvarde, Latvia. The drill began with fire alarms and smoke machines in inside the operations building and culminated with simulated casualties and evacuations outside. (U.S. Army photo by Spc. Thomas Scaggs) 170519-A-TZ475-195