Gen. Raymond Johns (from left to right), Air Mobility Command commander, John Marshall, Grand Forks Air Force Base ambassador, Col. Don Shaffer, 319th Air Refueling Wing commander and Chief Master Sgt. David Spector, AMC command chief, sign the last KC-135 Stratotanker stationed here, after the conclusion of the mission complete ceremony Dec. 3. The ceremony was held to recognize the completion of 50 years of KC-135 Stratotanker flight and maintenance operations on base. Grand Forks Air Force Base is scheduled to receive Global Hawks in the summer of 2011. (U.S. Air Force Photo/Tech. Sgt. Johnny Saldivar)