The T&T Bisso Response Network announced the addition of Mirian Castillo to its team. Castillo will serve as operations assistant for the company’s Salvage & Emergency Response group. Born in Ecuador, Castillo began her career as an operations intern for Gulf Agency Company in Houston. She became a port disbursement analyst for Heidmar Inc., a commercial operator of tanker vessels based in Norwalk, Conn., and was later promoted to vetting and quality coordinator in support of tanker vetting and fleet management operations.