RED SEA (Oct. 25, 2021) From the left, the transport dock ship USS Portland (LPD 27), the Saudi frigate Al Riyadh (812), the mine countermeasures ship USS Gladiator (MCM 11), and the mine countermeasures ship USS Sentry (MCM 3) sail in formation prior to a live-fire exercise as part of joint exercise Indigo Defender. Indigo Defender 21 is a capstone bilateral maritime exercise between Royal Saudi Naval Forces and U.S. Naval Forces Central Command to enhance interoperability and strengthen our capacity to maintain regional maritime security and stability. (U.S. Navy photo by Mass Communication Specialist Seaman Elisha Smith)