GULF OF MEXICO - Coast Guard Petty Officer 2nd Class Kurt Stricklen, and Petty Officer 3rd Class Eric Schenk, specialists in hazardous material and oil spill response, collect oil samples in the Gulf of Mexico, May 27, 2010. Using state of-the-art technology, they gather samples and field data, which help environmental scientists determine the effectiveness of dispersants used to break down oil in the water column. (USCG) 10Spill0527-G-2023P-006