A little old, but a good read, and not much has changed. Those 110s and their Port Security Unit and Law Enforcement Detachment crews are still there, still patrolling and still intercepting and boarding boats and ships daily to check for compliance with treaties. weapons smuggling, and sanctions.
The USCG also frequently deploys PSU and other special operations units to help provide security for various special events world wide, and in support of military operations. High endurance cutters are also attached to the 7th fleet and patrolling/training allies in the SE Asia region. (Who would have thought in the 70's or 80's that we would consider Vietnam ally? Times have certainly changed.)