The average United States Navy SEAL spends over a year in a series of formal training environments before being awarded the Special Warfare Operator Naval Rating and the Navy Enlisted Classification (NEC) 5326 Combatant Swimmer (SEAL) or, in the case of commissioned naval officers, the designation Naval Special Warfare (SEAL) Officer. All Navy SEALs must attend and graduate from their rating's 24-week "A" School known as Basic Underwater Demolition/SEAL (BUD/S) school, a basic parachutist course and then the 26-week SEAL Qualification Training program.[1]
All sailors entering the SEAL training pipeline with a medical rating or those chosen by Naval Special Warfare Command must also attend the 6-month Advanced Medical Training Course 18D and subsequently earn the NEC SO-5392 Naval Special Warfare Medic before joining an operational Team. Once outside the formal schooling environment SEALs entering a new Team at the beginning of an operational rotation can expect 18 months of training interspersed with leave and other time off before each 6-month deployment.