U.S. Army Sgt. Darrell Whaley, an operating room specialist

U.S. Army Sgt. Darrell Whaley, an operating room specialist with the 250th Forward Resuscitative Surgical Team, prepares to make an incision on a simulated throat as he practices conducting a cricothyrotomy at the Role 2 compound at Al Asad Air Base, Iraq, Oct. 30, 2020. Cricothyrotomy is an incision made through the skin and cricothyroid membrane to establish a patent airway during certain life-threatening situations, such as airway obstruction by a foreign body, angioedema, or massive facial trauma. (U.S. Army National Guard photo by Staff Sgt. Armando Vasquez)