Delta Force operator Tom Satterly explains the real difference between tier one special forces units in this most replayed moment, a segment viewers keep returning to from his full interview.

In this popular clip, the Delta Force operator breaks down how elite tier one units approach close quarters battle, the split-second choreography of clearing a room, and why the enemy never gets a chance to make a decision once the door comes off. He lays out the hierarchy of special operations, from SEAL Team 6 and Delta at the tier one level, through Rangers and Green Berets at tier two, down to the conventional forces, and explains why so few operators ever reach the top.

The conversation then turns inward. He describes a training culture with no schedule and no one telling you what to do, an organisation full of leaders driving themselves to be better every single day. He is honest about the cost of that mindset, the way you build yourself up physically whilst tearing yourself down mentally, and the reality of life after the unit, when the train you gave everything to keeps hauling down the tracks without you.

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