Plane Sending News Today

Slow enough to keep them in the air and yet send them off course. lets look at some maps now. this is where the search started. this was the original path of the plane and then came the left turn that weve been fascinated by that gives some indication that somebody was at the stick of that plane and changing things. first of all, explain these pings. are these coming from satellite pinging off of the plane or is the plane sending out some sort of a signal? >> so its not entirely clear to me but ...