The Dassault-Sagem SlowFast is a tactical stealth UAV concept designed by the French unmanned aircraft manufacturer Dassault-Sagem Tactical UAV in 2004. The program was cancelled.The SlowFast is an evolution of the twin-engine tactical UAV Dassault AVE-C Moyen Duc. The SlowFast designation comes from its versatility to perform high-speed reconnaissance flight (Mach 1.6) and 3–4 hours autonomy low-speed (120 kt) observation mission. Its ground station is based on the Sagem Sperwer's model.