From the Texas State Guard:

“Lt. Col. Richard Male, Texas State Guard Medical Brigade, Texas State Guard, Texas Military Department, examines a patient during Operation Lone Star at Juarez-Lincoln High School, La Joya ISD, City of Mission, TX – Government , July 24, 2018. Operation Lone Star, a full scale emergency response exercise uniting federal, state, and local health and human service agencies. The Texas Military Department participation in OPERATION LONE STAR is intended to increase joint and interagency readiness and to demonstrate these capabilities that may be used by the Governor or our fellow partners in support of the citizens of the State of Texas. (Texas State Guard Photo by Staff Sgt. Gregory Illich).”

For more information:

http://www.dshs.texas.gov/news/releases/2018/20180718.aspx