Australia's Droneshield set for best week since early August on US expansion

** Droneshield DRO set to gain 14% this week, their best week since early August

** On Monday, defence technology firm announced it would expand R&D ops in U.S., adding second location to headquarters in Virginia

** Stock gained 7% on Tuesday and 3% since

** DRO last down 0.4% at A$3.655

** YTD, stock surges 377.8%