The Air Force's top uniformed acquisition officer said today he's confident the F-35 Joint Strike Fighter can meet the Pentagon's 80-percent mission-capable rate target, despite a recent report from the director of operational test and evaluation showing fleetwide availability is less than 60 percent. "We're pushing to that," Lt. Gen Arnold Bunch said during a Feb. 1 Air Force Association event. "If we execute the way we think we are, we believe we can make it. It's a challenge, but...