U.S. Navy Petty Officer 3rd Class Laurie Kaczmarik, from the engineering department of the aircraft carrier USS Harry S. Truman (CVN 75), participates in a shipboard reactionary force basic course while underway in the Atlantic Ocean on Sept. 16, 2009. Kaczmarik is participating in the course after being temporarily assigned to the ship’s in-port security force. The Truman is participating in a joint task force exercise designed to test and evaluate the U.S. Navy's reaction to multiple wartime scenarios from small-craft attacks to land-based missile attacks and is the final certification for a strike group preparing to deploy.