An entry in the Nov. 10 column incorrectly stated the number of airstrikes the United States has conducted against ISIS targets in Iraq and Syria. The number is 6,257. Coalition forces other than the US have conducted 1,735. We have corrected the entry here.
A new Air Force organization is searching for counter-drone firms to participate in a dozen or more exercises to help create operating plans by the end of this year for defending the service’s U.S.-based installations from drone attacks.