Petty Officer 1st Class Vladmir Voronov, a Hospital Corpsman with 4th Marine Expeditionary Brigade, Force Headquarters Group, applies Tactical Field Care during his final evaluation of a Tactical Combat Casualty Care course provided by Marine Forces Reserve at Marine Corps Support Facility New Orleans, Nov. 20, 2019. TCCC has been the most effective way to reduce casualties from injuries on the battlefield since 1996 due to its ability to address immediate threats to life and decrease the amount of time before surgical intervention can occur. (U.S. Marine Corps photo by Lance Cpl. Christopher W. England)