Light woods

[Poor Yorek]

Expanding on Alan's rationale - the unit in the open behind the LW would be moving around, milling about getting ready to move out and be much more noticeable.

Simple example:

There is an empty "light woods" lot (though the lots are advertized as "heavily wooded"!) next to ours with a home on the next lot over. I can see the neighbors move about on their driveway, but they could hide/cover in the woods between us (like the wretched deer who eat our roses do).

Reminds me of that Monty Python's Flying Circus episode "How Not to be Seen."
http://www.youtube.com/watch?v=ltmMJntSfQI