Petty Officer 2nd Class Jeffrey Roberts uses a level to ensure a frame board is aligned properly. U.S. Navy Petty Officer 2nd Class Jeffrey Roberts uses a level to ensure a frame board is aligned properly as Seaman Michael Joseph holds it in place while making improvements to a patrol base in Mahawil, Iraq, on Feb. 4, 2009. The Navy Seabees are from Amphibious Construction Battalion 2. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 126742-X-BRE03-937.jpg Photo Gallery