[wdb]

My son-in-law is a home inspector. He bought a pretty fancy drone to do overhead imaging - chimney, roof, etc. plus glam shots from higher altitudes. It was a GPS model; he could position it, then put the control down and use his cellphone to take pictures. GPS would keep it virtually motionless in the air. He was flying it at a job in Baltimore City one day when it suddenly turned right and disappeared. He never found it.