The Security Council has approved a resolution that would transform the African Union force into a blue-helmeted force that is larger and more robust.

NPR: Bush Addresses U.N. on Peace in Middle East

The military calls it purple, purple meeting, you know, you've got green for Army, and khaki for the Marines and light blue for - the Air Force, and blue for the Navy.

NPR: Joint Chiefs Shake-Up Leaves Questions

The Blue Force Tracker is a new digital tracking system, which shares information with hundreds of other commanders.

CNN: Technology links 101st on the battlefield