waters which extend three nautical miles around Farsi Island in the Persian Gulf. Patrol craft of Iran's Islamic Revolutionary Guard Corps (IRGC) Navy seized the craft and detained the crew at a military base on Farsi Island. According to military sources, the two RCBs were on a routine transit from Kuwait to Bahrain, which serves as the home port for Task Force 56 under the Fifth Fleet. They left Kuwait at 12:23 p.m local time and were scheduled to refuel with the U.S. Coast Guard Island Class Patrol Cutter Monomoy at 5 p.m. During the transit one RCB developed an engine problem, and both boats stopped to solve the mechanical issue. During this time they drifted into Iranian waters. At 5:10 p.m. the boats were approached by the two small Iranian center-console craft followed by two more boats. There was a verbal exchange between the Iranian and U.S personnel and the officer commanding the RCBs allowed the Iranian sailors to come aboard and take control. The Iranian forces made the sailors kneel with their hands behind their heads. The RCBs reported their engine failure to Task Force 56, and all communications were terminated after the report. A U.S. search-and-rescue effort was launched leading to "robust bridge-to-bridge communications" with Iranian military vessels, wherein the Iranians informed U.S. Navy cruiser at 5:15 p.m that “the RCBs and their crew were in Iranian custody at Farsi Island and were safe and healthy.” By the time a search-and-rescue effort got under way (it included sending a U.S. Navy and U.S. Coast Guard vessel inside Iranian territorial waters over concern U.S. sailors could have been lost overboard), the sailors were already ashore. Secretary of State John Kerry, spoke with Iranian foreign minister Mohammad Javad Zarif at least five times by telephone. Kerry stated that in his other phone calls about the situation he "made it crystal clear" how serious it was and that "it was imperative to get it resolved." The sailors had a brief verbal exchange with the Iranian military and were released unharmed along with all their equipment the next day on January 13 after 15 hours, and they departed the island at 08:43 GMT on their boats. They later were escorted by a U.S. Coast Guard patrol cutter, while the U.S. Navy overwatched and supported. The Pentagon oversaw the escort on high alert. The IRGC stated that they released the sailors after