the cell phone tower after the systems mysteriously shut off? i want to make it clear, sources say there's no indication any calls were placed. just because a phone connects to a cell phone tower doesn't mean a call can go through and it is tough to get the answers and information we need to know what this means. >> any information gleaned about the cell phones could aid the overall investigation. >> yeah, right. it could if certain factors become clear like the co-pilot's phone was off and then turned on after the plane disappeared. to put it in to context, anderson, investigators don't seem to be jumping up and down over the information. they have known about the data detection for a while and it doesn't tell us the critical information we need like a motive and wo was alive on the airplane. this investigation is ongoing in to the passengers and crew. so far, it's not leading to the answers we are looking for here. in many ways, anderson folks are waiting for that black box to provide the rel proof of what