The first step is to become a Marine. The prerequisites for Marines are:
- Have a minimum GT score of 105 (enlisted) or 110 (officers).
- Have a minimum PFT of 235.
- Be able to pass the MARSOC swim assessment.
- Meet the MARSOC medical screening criteria.
- Be eligible to obtain and maintain a secret clearance.
- Be willing, upon selection, to make a lateral move to the critical skills operator MOS.