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.
The Air Force’s Hypersonic Attack Cruise Missile is behind schedule and may significantly overrun its expected cost, which could partially explain why the service is reviving the hypersonic AGM-183 Air-Launched Rapid-Response Weapon.