NASA astronauts Suni Williams and Butch Wilmore were on the International Space Station more than nine months, despite launching into space in June for what was expected to be an eight-day mission.

The vessel is commonly used in overseas missions. The Coast Guard typically takes a lead role in security missions at sea close to the United States.

Navy warship USS Gravely is on a mission to strengthen security at the U.S.-Mexico border, Pentagon officials said. Why it matters: The deployment of the guided-missile destroyer that last year was involved in shooting down Iran-backed Houthi rebels' ship attacks in the Middle East to a region the U.