Testing the most recent configuration of air-transportable all-terrain rescue vehicles is expected to begin this spring, the Air Force said last week. Three Block 1 Guardian Angel Air-Deployable Rescue Vehicles, plus one spare, will be checked for air filter system function and ride quality, according to a statement of work posted Jan. 5 on Federal Business Opportunities. A final test report will detail whether the changes made to Block 0 vehicles work as intended. “The changes from Block 0 to...