By the second week of BUDS training, many of the students have already dropped out. The remaining men still have 24 weeks of hardship. Students who are failing physically are put before the review boards where instructors will decide if they are dropped for lack of performance or rolled to the next class for medical leave. Each week they must improve, they must run faster and swim farther. Individuals do not survive, teammates do. Hellweek, the harshest part of training, is still on the horizon.