MAS's house was on Connecticut Ave. To the west, the street which runs behind the house is Colorado Ave. There are no buildings in the 2000 block of Colorado Ave. The entire block is an open field with the street running down the center. LEO's were seen spread out, walking the field. In itself, that doesn't mean much because an area like that would be searched as a matter of routine. I can't find the video now which showed the HRD dogs in the field, but we saw them in the live feed. I have a feeling they hit on something back there. In any case, a section directly behind the house was eventually roped off.
The backyard is concealed from view on the sides by high wooden fencing. I tried to zoom in close enough to see if the fence runs along the back of the property, but the trees are in the way. Judging by the age and condition of the house, and the thickness of the trees, if there is a fence, I wouldn't be a bit surprised if it's missing some boards. So, from what I can tell, the backyard provides a good deal of privacy. If one knew his/her neighbors worked during the day, or waited until nightfall, one could probably dismember a body in the backyard and no one would know. Likewise, if one wanted to remove something from the house but didn't want the neighbors to see, one could drive around the block and load the car from behind the house. JMO
ETA: Also wanted to mention the garage. More privacy. In the google view, you can see a hose lying the grass. The garage and/or the backyard could've been hosed down with bleach. Also, it rained practically every day during the period of June 5-12.
http://www.wunderground.com/history/airport/KMSY/2012/6/5/MonthlyHistory.html
Here, a detective seems interested in a particular spot of grass. Behind him, on the other side of the trees, is the backyard.
I've attached additional images. 1. A Google satellite overhead view. MAS' house is in the center. 2. Facing front of 2029 Connecticut Ave. 3. View from the rear on Colorado Ave. 4. LE canvassing the open field. 5. Roped off section directly behind the house.
MAP
Photos from WWL-TV
22 second raw video from WDSU-TV
WDSU-TV video report of Kenner house search
https://twitter.com/JhollyW/status/213032273937838080