A high-explosive field test was conducted under Operation PRAIRIE FLAT at the Defence Research Estabilshment Suffield, Ralston, Alberta, Canada on 9 August 1968 Eight flexible utility connections incorporating various types of hoses and fittings were subjected to rapid differntial motion and acceleration. One was instrumented to measure the lateral and longitudinal forces on the moving end of the flexible hose. All connections withstood the test environment of about a 1.8-inch peak relative displacement and between 5g and 50g peak acceleration without damage. The measured axial force on the hose was in excess of a theoretically calculated value by a factor of 10, while the measured shear force was too imprecise to allow meaningful comparison with theory. The force measurements were felt to be in error, and the design criteria developed from theory and previous laboratory test results were accepted as valid. No logistical or design advantage was discovered for any particular hose or fitting type. However, the bronze hose was about twice as expensive as the rubber hose; the latter was concluded to be an economical design alternative.