The aggregate - Be able to do the aggregate at a decent clip (jogging pace is fine) without stopping, and with the ability to do some sort of manual manipulation in between each exercise. They may have some rifle disassembly/reassembly in there. If you can run hard for the whole thing then great, but you don't have to. There are plenty of videos on this event but it goes something like this:
- Farmers carry (75lbs in each hand) 50-75 yards, 10 pistol shots on A/B steel at 25 yards. Carry back to start line
- 50lb sandbag 50-75 yards, repeat the pistol shots, and back to start line
- 75lb sled drag, repeat the above