Navy SEALs are highly selective, with a number of qualifications for physical and mental standards. Their training is selective, with an 8-week training boot camp for aspiring SEALs and a 24-week course for trainees. Mental toughness is also essential among Navy SEALs for life-threatening situations they may encounter on sea, air, and land. https://usmilitary.com/what-makes-navy-seals-the-best-special-forces-operators-in-the-world-today/