No worries...I've seen the explanation since.
:-)
Now then, have you seen this?
Agency Says Worker Placed Motion Detector
PHILADELPHIA -- A motion detector discovered in a commuter rail yard earlier this month was put there by a transit employee who apparently wanted to know when his supervisors were coming, officials said Monday. (snip)
http://www.nynewsday.com/news/nationworld/nation/wire/sns-ap-transit-device,0,5786120.story?coll=sns-ap-nation-headlines