A B-1B Lancer flies overhead as the mobile emergency operations center leaves here to respond to an antiterrorism exercise at Rapid City Regional Airport, S.D., March 12. Ellsworth Airmen teamed up with their civilian counterparts during the exercise, in an effort to develop a working relationship and become familiar with the policies and procedures of each other. (U.S. Air Force photo/Airman 1st Class Matthew Flynn)