 The PCG has engaged in joint operations with the Republic of Singapore Navy (RSN) since the 1990s and is still ongoing with strong mutual ties, such as the joint actions of the RSN's 180 Squadron (comprising personnel of the Navy's Accompanying Sea Security Team, better known as ASSeT) and the PCG (with several officers trained and selected to do joint boarding operations with their Navy ASSeT counterparts) in boarding key vital and important cargo vessels (such as LNG/LPG carrier ships or oil tankers) in Singapore's territorial waters to protect them from any terrorist activity, such as hijacking actions or bombing attacks, and to ensure vessels have safe passage, as well as with foreign agencies.Alliances were forged with the Royal Malaysian Police Marine Operations Force and the TNI-AL (Indonesian Navy).It is involved in the annual Cooperation Afloat Readiness and Training (CARAT) programme with the United States Coast Guard, the RSN, and five other Southeast Asian countries.