The military has more than enough large transport planes, and the appropriation of any more in the next budget year will force some into premature retirement, Defense Department officials told a congressional panel today. “We have enough C-17s,” Mike McCord, principal deputy undersecretary of defense (comptroller), said. “Money spent on things we don’t need takes away from those we do need.” Along with McCord, Air Force Maj. Gen. Susan Y. Desjardins, director of strategic plans for Air Mobility Command, and Alan Estevez, principal deputy assistant secretary of defense for logistical and materiel readiness, repeated Defense Secretary Robert M. Gates’ position...