BALTIMORE, Md.—The head of the intelligence agency that defends the nation from foreign cyber threats yesterday said that industry support of the National Security Agency is vital, despite the recent leaks of classified information by a contractor who disclosed critical methods the agency uses to help track terrorist threats to the homeland. “We couldn’t do our jobs without the contractor support we get from industry, it’s been absolutely superb,” Army Gen. Keith Alexander, director of NSA and the commander of…
