Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Following that devastation of the United States Gulf Coast by Hurricane Katrina, the Prime Minister of Singapore, Lee Hsien Loong, sent a letter to US President George W. Bush promising support for the American people in their relief effort in the wake of Hurricane Katrina. On 1 September, the Republic of Singapore Air Force (RSAF) sent three CH-47 Chinook helicopters to Louisiana to assist in relief operations. These three aircraft, which were based in the Peace Prairie attachment in Grand Prairie, Texas, arrived in Fort Polk, Louisiana on the afternoon of 1 September to aid rescue operations mainly in resupply and airlifting missions.