Special Operations Forces (SOF) are elite military units with special training and equipment that
can infiltrate into hostile territory through land, sea, or air to conduct a variety of operations,
many of them classified. SOF personnel undergo rigorous selection and lengthy specialized
training. The U.S. Special Operations Command (USSOCOM) oversees the training, doctrine,
and equipping of all U.S. SOF units.
https://www.scribd.com/doc/124213689/CRS-Report-U-S-Special-Operations-Forces-SOF-Background-and-Issues-for-Congress
