Air Force Aircrew Life Support members from the 28th Air Expeditionary Wing, Diego Garcia, perform routine maintenance on aircrew equipment during Operation ENDURING FREEDOM. Aircrew Life Support members perform the preventative maintenance every 30 days on aircrew flight helmets, oxygen masks, and survival vest to ensure pilots are always prepared for a mission. In response to the terrorist attacks on September 11, 2001 at the New York World Trade Center and the Pentagon, President George W. Bush initiated Operation ENDURING FREEDOM in support of the Global War on Terrorism (GWOT), fighting terrorism abroad