Scuba (self-contained underwater breathing apparatus) training consists of two types –open circuit (compressed air) and closed circuit (100 percent oxygen). This is consideredby many to be the SEALs’ raison d’être, and accordingly lasts eight weeks.
Scuba (self-contained underwater breathing apparatus) training consists of two types –<br>open circuit (compressed air) and closed circuit (100 percent oxygen). This is considered<br>by many to be the SEALs’ raison d’être, and accordingly lasts eight weeks.