On March 19, at exactly 1:00 p.m. Eastern Standard Time, the National Geodetic Survey (NGS) joined hundreds of surveyors from all around the United States in the first-ever Surveying USA Day, the kick-off event commemorating Surveyor's Week. This nationwide event was coordinated by the National Society of Professional Surveyors. It provides an opportunity for professional, government, and independent surveyors to collect GPS data simultaneously from various different methods, including handheld GPS devices, as well as more sophisticated surveying equipment....