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pesticides to crops, saving money and reducing environmental impacts. They'll help police departments find missing people, reconstruct traffic accidents and act as lookouts for SWAT teams. They'll alert authorities to people stranded on rooftops by hurricanes and monitor evacuation flows.
• Real estate agents will use them to film videos of properties and surrounding neighborhoods. States will use them to inspect bridges, roads and dams. Oil companies will use them to monitor pipelines, while power companies use them to monitor transmission lines.
• With military budgets shrinking, drone makers have been counting on the civilian market to spur the industry's growth. But there's an ironic threat to that hope: Success on the battlefield may contain the seeds of trouble for the more benign uses of drones at home.
• The civilian unmanned aircraft industry worries that it will be grounded before it can really take off because of fear among the public that the technology will be misused. Also problematic is a delay in the issuance of government safety regulations that are needed before drones can gain broad access to U.S. skies.
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• The last U.S. combat troops left Vietnam 40 years ago Friday, and the date holds great meaning for many who fought the war, protested it or otherwise lived it.
• While the fall of Saigon two years later is remembered as the final day of the Vietnam War, many had already seen their involvement in the war finished -- and their lives altered -- by March 29, 1973.
• U.S. soldiers leaving the country feared angry protesters at home. North Vietnamese soldiers took heart from their foes' departure, and South Vietnamese who had helped the Americans feared for the future.
• Many veterans are encouraged by changes they see. The U.S. has a volunteer military these days, not a draft, and the troops coming home aren't derided for their service. People know what PTSD stands for, and they're insisting that the government takes care of soldiers suffering from it and other injuries from Iraq and Afghanistan.
• Below are the stories of a few of the people who experienced a part of the Vietnam War firsthand.
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