BALTIMORE - Clifton Williams, a teacher and staff director at the Maritime Industries Academy High School in Baltimore, listens to a presentation on the Coast Guard's roles and missions in the Chesapeake Bay as part of their visit to the Coast Guard Yard in Baltimore, April 26, 2010. MIA is a maritime-themed high school with a military component that encourages students to take leadership positions in their lives and to develop the knowledge, thinking skills and appropriate attitudes necessary for success in a global society. U.S. Coast Guard photo by Petty Officer 3rd Class Robert Brazzell.