171004-N-CW570-0003 TRINCOMALEE, Sri Lanka (Oct. 4, 2017) Navy Diver 1st Class Vincent Carson, assigned to Mobile Diving Salvage Unit (MDSU) 1, and Sri Lankan navy divers conduct an air quality test on diving equipment during the first-ever Cooperation Afloat Readiness and Training (CARAT) at the Naval Base in Trincomalee, Sri Lanka. CARAT is an annual, bilateral maritime exercise series designed to boost interoperability between partner nations which contributes to regional security and stability by sharing best practices and cooperation in response to shared maritime security challenges. (U.S. Navy photo by Mass Communication Specialist 1st Class Arthurgwain L. Marquez/Released)