Government acts after 73 flights disrupted near Ho Chi Minh City's main airport Startup Saolatek conducts weekly demonstrations to share knowledge about unmanned aerial vehicles (UAVs). Vietnam's security ministry has asked the public to photograph people launching UAVs near airports, which is deemed a safety risk. (Saolatek) HO CHI MINH CITY -- Vietnam is stepping up efforts to combat drone incursions around airports after recent incidents disrupted flights and prompted a high-level government response, even as the country tries to build a "low-altitude economy."