Capt. Jacqueline Twomey, commanding officer of Marine Safety Unit Port Arthur presents Cmdr. Daniel Cost with a Meritorious Service Medal during a change-of-command ceremony for Marine Safety Unit Lake Charles in Lake Charles, Louisiana, on July 10, 2019. Marine Safety Unit Lake Charles' missions include maritime safety, security, and environmental protection throughout an 8,400 square mile area of responsibility in southwest Louisiana, the 11th busiest tonnage port in the nation. U.S. Coast Guard photo by Petty Officer 2nd Class Johanna Strickland.