This movie shows the highlights of logging-while-drilling (LWD) operation conducted during Integrated Ocean Drilling Program (IODP) Expedition 343, Japan Trench Fast Drilling Project (JFAST) penetrated the plate boundary fault in the largest displacement area of the 2011 Tohoku-Oki earthquake. LWD data was utilized to determine stress state described in the paper. Related information: http://www.jamstec.go.jp/chikyu/exp343/. This video relates to a paper that appeared in the Feb. 8, 2013, issue of Science, published by AAAS. The paper, by Weiren Lin at the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) in Nankoku, Japan, and colleagues was titled, "Stress State in the Largest Displacement Area of the 2011 Tohoku-Oki Earthquake."