UAV's have the potential of replacing manned aircraft for dull, dirty, and dangerous missions. In addition, UAV's are less expensive than manned aircraft and pose no risk to human operators. Applications include remote sensing, search and rescue missions, border patrol, surveillance of disaster-affected areas, aerial photography, aerial mapping for geotechnical survey, vegetation growth analysis, crop dusting, and precision agriculture. The UAV industry is the fastest growing sector of the aerospace industry.