ATLANTIC OCEAN (July 29, 2007) - Nimitz-class aircraft carriers USS Dwight D. Eisenhower (CVN 69), USS Harry S. Truman (CVN 75) transit in formation with the Royal Navy's Invincible-class aircraft carrier HMS Illustrious (R 06) in the Atlantic Ocean. The three carriers are currently participating in Operation Bold Step where more than 15,000 service members from three countries partake in the Joint Task Force Exercise (JTFX). U.S. Navy photo by Mass Communication Specialist 2nd Class Jay C. Pugh