US Air Force CSAR Pave Hawk Successor Reaches Critical Design Review - Rotor: Sikorsky’s HH-60W can now prepare for assembly, test and evaluation, Lockheed Martin said. The U.S. Air Force Combat Rescue Helicopter (CRH) project has successfully reached air vehicle critical design review. “This milestone is an important achievement and demonstrates Sikorsky and the Air Force are well aligned on the technical requirements of the HH-60W,” said Tim …