In February 1964. Boat Support Unit One was established under Naval Operations Support Group, Pacific to operate the newly reinstated patrol torpedo fast (PTF) program and to operate high-speed craft in support of NSW forces. In late 1964 the first PTFs arrived in Da Nang, Vietnam. In 1965, Boat Support Squadron One began training patrol craft fast crews for Vietnamese coastal patrol and interdiction operations. As the Vietnam mission expanded into the riverine environment, additional craft, tactics, and training evolved for riverine patrol and SEAL support. SWCC detachments have participated in nearly every major conflict since then, particularly in the Persian Gulf theatre during the 1987–1988 period of conflict, the Invasion of Panama Operation Just Cause 1989-90 and the 1991 Gulf War to the more recent War on Terrorism along with counter narcotics operations in South and Central America. In August 1996 while attached to during counter drug operations in Colombia, a SWCC team came under attack in the Antioquia Valley region by members of FARC, Colombia's revolutionary movement, while conducting field operations. Six team members held off a force of approximately 150 rebels. The battle lasted for three days and nights and members of the team found themselves surrounded and cut off from each other on several occasions. Short of ammunition and water, The team held on until first light on day three, regrouped and counter-attacked, punching a hole in the FARC defense line and linking up with Colombian special forces sent there to assist them. An estimated 43 FARC rebels were killed during the battle and four were captured with only one team member being wounded. Members of the team were cited for heroism and bravery. The Global War on Terrorism was the impetus for several important changes in the NSW community. One of these many changes was the creation of a new SB rating system for SWCCs, which allows them to focus on their unique skill sets, to avoid limitations and constraints imposed by the old regime of "source ratings", to reach consensus and unity within the profession, and to allow them to enjoy advancement opportunities on par with the rest of the Navy. Another important development was the recognition of the knowledge, skills, and training of SWCC crewmen as a warfare specialty, represented by the NEC 5352 and later denoted by the award of a military device or service badge. For a brief period qualified sailors were awarded no device; boat captain-qualified sailors wore the small craft insignia originally created for and worn by riverine sections during the Vietnam War. Still earlier than this, the small craft pin was worn by those with the 9533 NEC.