 A small number of DASHes were apparently given reconnaissance gear and used for naval surveillance over the Gulf of Tonkin in 1966 in a project codenamed SNOOPY.In the early 1970s the Air Force evaluated the QH-50D for a battlefield drone test program codenamed NITE GAZELLE.NITE GAZELLE apparently experimented with using drones to drop bomblets and carry machine guns, but details are unclear, as are reports that the DASH was used in other evaluations as a countermeasures platform.