U.S. Navy Aviation Structural Mechanics 3rd Class Gabby Sarvis, left, and Dylan Soucy-Peterson perform maintenance on an EA-6B Prowler aircraft assigned to Electronic Attack Squadron 134 aboard the aircraft carrier USS George H.W. Bush Aug. 21, 2014, in the Persian Gulf as the ship supports operations in Iraq. President Barack Obama authorized humanitarian aid deliveries to Iraq as well as targeted airstrikes to protect U.S. personnel from extremists known as the Islamic State in Iraq and the Levant. U.S. Central Command directed the operations.