In Moscow this year, two groups of naval officers will raise their glasses and toast the 25th anniversary of an agreement that has significantly fostered a better understanding between the two nations' navies. "An Agreement between the Government of the United States and the Government of the Soviet Socialist Republics on the Prevention of Incidents on the High Seas and the Air Space Above Them," commonly known as IncSea, has stood the test of time, weathering such events as the 1973 Arab-Israeli War, the Afghanistan invasion, the shootdown of Korean Airlines Flight 007, the hawkish attitude of the Reagan administration, and finally, the collapse of the Soviet Union itself. With the shift away from an adversarial relationship, over the long term the continuing maturity of the relationship between the U.S. and Russian Federation Navies probably will negate the need for maintaining this confidence-building accord. In the short term, however, IncSea continues to serve as a component of a strengthening bilateral relationship between the two navies. Indeed, over the past few years, delegations from the two navies have negotiated a protocol to revise and expand the scope of the accord. That IncSea has endured can be attributed to the professionalism and the shared respect of those who go out on and over the high seas. However, credit must also be given to those who originally negotiated the accord.