C-17A Globemaster III aircrew discuss the Tri-Wall Aerial Delivery System (TRIADS) mission prior to their take off for Afghanistan. Air Force C-17's delivered Humanitarian Daily Rations (HDR) in support of Operation ENDURING FREEDOM from Germany to Afghan refugees who massed inside the borders of Afghanistan. The C-17's carried more than 35,000 HDRs packed in 84 TRIAD boxes. Each box measures 80 inches tall and 48 inches square, containing 420 HDRs. The HDRs were delivered in a first of its kind, high-altitude airdrop. This is the first operational TRIAD delivery from a C-17 aircraft as well as the first combat airdrop mission performed by the C-17