ATLANTIC OCEAN - Petty Officer 3rd Class Issac Stenback, stationed aboard the U.S. Coast Guard Cutter Eagle, collects oils samples from one of the ship's three diesel generators while on watch during the Eagle's transit to Puerto Rico Monday, May 3, 2010. Stenback will then let the sampled oil cool to room temperature prior to conducting a falling ball test, which will determine the viscosity percentage of the oil. U.S. Coast Guard photo by Petty Officer 2nd Class Jetta H. Disco.