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They had both reportedly completed Hell Week, which takes place during the fourth week of part of Phase 1 of Basic Underwater Demolition/SEAL (BUD/S) training.
It is a grueling 'five-and-a-half days of cold, wet, brutally difficult operational training on fewer than four hours of sleep,' the Navy says, and candidates 'run more than 200 miles and do physical training for more than 20 hours per day.'
The Navy produces around 200 to 250 SEALs a year. In the last two decades, 17 have died during training, NBC News reported.
SEAL candidates go through 24 weeks of training throughout five phases, including a physical training test, obstacle courses, extensive swimming and running, combat diving, land warfare training and other physically difficult tests.
Many candidates do not make it pasted Phase 1, also known as Stage 3, and a 'significant' number begin to drop out.