A U.S. Navy F/A-18F Super Hornet prepares to launch from the aircraft carrier USS Nimitz earlier this week in the Red Sea. The ship is among U.S. military assets in the region. Nathan R. McDonald /UPI/Landov hide caption

itoggle caption Nathan R. McDonald /UPI/Landov

Off they go. Eric Feferberg /AFP/Getty Images hide caption

itoggle caption Eric Feferberg /AFP/Getty Images