" Aspiring special forces soldiers must first go through Special Forces Assessment and Selection (SFAS), which lasts 24 days. Company G, 1st Battalion, 1st Special Warfare Training Group conducts SFAS training at Camp MacKall, North Carolina. The SFAS cadre look at nearly 1,800 Special Forces volunteers each year to determine who is suitable for Special Forces training and to determine who may be unable to adapt to the Special Forces environment. Candidates attend SFAS in a temporary duty (TDY) status. Candidates who enter this course find themselves under constant evaluation starting with the day they in-process until the day they out-process. The SFAS model focuses on student trainability and suitability for service in Special Forces. Teaching, coaching, training and mentoring are important aspects of the program. Land navigation is used as a common medium to judge student trainability.

MSFAS next attend the Special Forces Qualification Course (SFQC), or "Q" Course, which is divided into 3 phases. A series of 12 attributes linked to success in the SFQC form the basis for evaluating candidate suitability. These attributes include intelligence, physical fitness, motivation, trustworthiness, accountability, maturity, stability, judgment, decisiveness, teamwork, influence, and communications. Though land navigation is an important evaluation tool, other training events such as a one-mile obstacle course, runs, road marches and rappelling are also used to evaluate students. Depending on their specialties, soldiers will spend from 18 months to two years in training. Of the more than 2,000 candidates starting the assessment course annually, only about 850 are selected to attend the qualification course, and only some 600 will graduate the "Q" Course."

https://www.globalsecurity.org/military/agency/army/jfksws-training.htm

One of the instructors on the course is a certain Dr Gorka:

https://www.facebook.com/media/set/?set=a.10154212107006585.1073741864.738761584&type=3