(l-r) Tech Sgt. Tony Andres, Staff Sgts. Angel Diaz-Berrios and Matthew Weffer, all 65th Civil Engineer Squadron water and fuel system maintenance specialists, secure a spill containment boom to the marina breakwater under the supervision of Vitor Berbereia, 65th Civil Engineer Squadron Environmental engineer and Spill Prevention and Response Program manager April 18, 2013, Praia da Vitoria, Azores. These engineers are responding to a simulated fuel spill during an exercise at the Praia fuel bay. (Photo by Lucas Silva/released)