Larry Vickers, a retired U.S. Army 1st Special Forces operator and a Delta combat veteran, filmed the video below for a series called TAC-TV. These exercises are part of a specialized Russian confidence training course, and one of their training techniques includes shooting each other in the chest.

The idea behind the exercise is to prepare the troops for the moment when they might be shot. Some end up wounded while others just take hits to the vest. Whatever the outcome, the soldier must be able to return fire quickly and accurately.

Trainees then push people away while firing at the ground, shooting at targets just inches from the volunteers playing innocent bystanders to show how stress affects one's concentration. Despite these stressful surroundings, the trainee must be able to stay calm and carry out his task.